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JavaScript, often abbreviated as JS, is a programming language that conforms to the ECMAScript specification. JavaScript is high-level, often just-in-time compiled, and multi-paradigm. It has curly-bracket syntax, dynamic typing, prototype-based object-orientation, and first-class functions.

Redux Mastery: A Practical Guide Through a Mini-Project
Introduction Redux is a powerful library for managing the state of your JavaScript applications. It follows a unidirectional data flow pattern, making it easier to manage the state, especially in complex or multi-panel applications.  Here, we'll provide a beginner-friendly explanation and a mini-project example to help you understand Redux better. What is Redux? Redux is an open-source JavaScript library introduced by Dan Abramov and Andrew Clark in 2015. It's designed to help manage the synchronous state of applications. It offers several benefits, including centralized state management, easier debugging, and strong community support. Benefits of Redux: Centralized State Management: Redux provides a single store to manage all the state of your application, making it easier to access and update the data. Easy Debugging: You can track and log the state flow of Redux, which helps with debugging and reproducing bugs in your application. Community Support and Resources:  Redux has a large developer community that can assist with solving both complex and minor problems. Mini-Project Description: In this mini-project, we will create a simple form with fields for Name, Email, Mobile Number, Gender, and two buttons (Submit and Cancel). We'll use Redux to manage the application's state. Here are the key concepts of Redux with the mini-project: 1. Action Types: Action types are constants that represent the various actions your application can perform. It's good practice to maintain all action types in one file. For example: 2. Action: Actions are plain JavaScript objects that describe what should happen in your application. They must have a "type" property to specify the action and a "payload" property to pass data to reducers.  For example: 3. Reducers: Reducers are pure functions that specify how your application's state changes in response to actions. They take the initial state and an action as parameters.   For example: In this example,We have a JavaScript Redux reducer for managing user data. It handles adding, updating, and deleting user records. 4. Store: The store is a central repository for your application's state. It holds the entire state and provides access and updates. You create a store by passing your reducer to createStore.   For example: In this mini-project, we've covered the basics of state management in Redux.  To use the states in your React project, you'll need to use two hooks from react-redux: 1. useSelector: useSelector is a hook used in functional components to access pieces of state from the global application state managed by Redux. It takes a selector function as an argument, defining how to extract data from the Redux store. When the data in the store changes, the component using useSelector will re-render to reflect the updated state. import { useSelector } from "react-redux"; const count = useSelector((state) => state.reducers); 2. useDispatch: useDispatch is a hook that provides access to the Redux store's dispatch function. It allows you to dispatch actions to update the state. import { useDispatch } from "react-redux"; const dispatch = useDispatch(); With these hooks, you can interact with the Redux store and manage your application's state efficiently. Now we have already made the actionType, action, reducer and store now we have to use it in the React component. import React, { useState } from "react"; import { useDispatch, useSelector } from "react-redux"; import { addUser, deleteUser, updateUser } from "../redux/action"; function DataDisplay() { const [visible, isVisible] = useState(false); const dispatch = useDispatch(); const users = useSelector((state) => state.users); const [editMode, setEditMode] = useState(false); const [selectedID, setSelectedID] = useState(null); const [table, setTable] = useState(true); const [formData, setFormData] = useState({ name: "", email: "", mobile: "", gender: "male", }); const handleInputChange = (e) => { const { name, value } = e.target; setFormData((prevData) => ({ ...prevData, [name]: value })); }; const handleFormSubmit = (event) => { event.preventDefault(); if (editMode) { dispatch(updateUser({ id: selectedID, ...formData })); } else { dispatch(addUser({ id: Date.now(), ...formData })); } setFormData({ name: "", email: "", gender: "", mobile: "", }); console.log(formData); isVisible(false); setSelectedID(false); setEditMode(false); setTable(true); }; const handleDeleteUser = (userId) => { dispatch(deleteUser(userId)); }; const handleUpdateUser = (user) => { console.log(user); setFormData(user); setEditMode(true); isVisible(true); setSelectedID(user.id); setTable(false); }; return ( <> <div> <div className="flex justify-between p-4 shadow rounded-3xl"> <div> <h1 className="text-3xl">Crud Operation</h1> </div> <div> <button onClick={() => isVisible(true)} className="border bg-green-500 p-2 pr-5 pl-5 text-lg rounded text-white" > {" "} New User </button> </div> </div> {visible && ( <div> <form onSubmit={handleFormSubmit} className="border-black w-fit relative m-auto z-100 p-12 top-2 outline-groove bg-rgba(0.5, 0, 0, 0.5) rounded-lg shadow-lg" > <div className=""> <input type="text" name="name" value={formData.name} onChange={handleInputChange} required placeholder="Enter your Name" className="border border-gray-300 p-2 rounded-lg w-96 text-left" /> </div> <div> <input type="email" name="email" value={formData.email} onChange={handleInputChange} required placeholder="Enter your Email" className="border border-gray-300 p-2 rounded-lg w-96 m-2 text-left" /> </div> <div> <input type="number" name="mobile" value={formData.mobile} onChange={handleInputChange} required placeholder="Enter your Mobile Number" className="border border-gray-300 p-2 w-96 rounded-lg text-left" /> </div> <div className="text-left pl-3"> <span>Gender : </span> <input type="radio" name="gender" value="male" checked={formData.gender === "male"} onChange={handleInputChange} className="form-checkbox text-blue-500 h-5 w-5" /> <span className="ml-2 text-gray-700">Male</span> <input type="radio" name="gender" value="female" checked={formData.gender === "female"} onChange={handleInputChange} className="form-checkbox text-blue-500 h-5 w-5 m-3" /> <span className="ml-2 text-gray-700">Female</span> </div> <div className="mt-5 mb-0"> <button type="submit" className="border bg-green-500 p-2 pr-5 pl-5 text-lg rounded text-white w-1/2" > {editMode ? "Edit" : "Submit"} </button> <button type="button" onClick={() => isVisible(false)} className="border bg-red-500 p-2 pr-5 pl-5 text-lg rounded text-white w-1/2" > Cancel </button> </div> </form> </div> )} <> {users.length > 0 ? ( table && ( <table className="min-w-full mt-3 border rounded-lg p-6"> <tr> <th className="px-6 py-3 bg-gray-50 text-center text-xs leading-3 font-medium text-gray-500 uppercase tracking-wider"> Name </th> <th className="px-6 py-3 bg-gray-50 text-center text-xs leading-4 font-medium text-gray-500 uppercase tracking-wider"> Email </th> <th className="px-6 py-3 bg-gray-50 text-center text-xs leading-4 font-medium text-gray-500 uppercase tracking-wider"> Mobile No </th> <th className="px-6 py-3 bg-gray-50 text-center text-xs leading-4 font-medium text-gray-500 uppercase tracking-wider"> Gender </th> <th className="px-6 py-3 bg-gray-50 text-center text-xs leading-4 font-medium text-gray-500 uppercase tracking-wider"> Action </th> </tr> {users.map((user) => ( <tr key={user.id} className="text-center ml-6 p-8"> <td className="px-6 py-3 bg-white-50 text-center text-xs leading-3 font-medium text-gray-500 uppercase tracking-wider"> {user.name} </td> <td className="px-6 py-3 bg-white-50 text-center text-xs leading-3 font-medium text-gray-500 uppercase tracking-wider"> {user.email} </td> <td className="px-6 py-3 bg-white-50 text-center text-xs leading-3 font-medium text-gray-500 uppercase tracking-wider"> {user.mobile} </td> <td className="px-6 py-3 bg-white-50 text-center text-xs leading-3 font-medium text-gray-500 uppercase tracking-wider"> {user.gender} </td> <button onClick={() => handleDeleteUser(user.id)} className="border bg-red-500 p-1 pr-5 pl-5 text-lg rounded text-white" > Delete </button> <button onClick={() => handleUpdateUser(user)} className="border ml-1 bg-yellow-200 p-1 pr-5 pl-5 text-lg rounded text-black" > Edit </button> </tr> ))} </table> ) ) : visible ? ( "" ) : ( <h1 className="p-10 text-3xl">No data found</h1> )} </> </div> </> ); } export default DataDisplay; Explanation of above code 1. Component State Management : The component begins by importing the necessary dependencies and Redux actions for managing user data. It uses the useState hook to manage various local states, such as whether the form is visible (visible), whether the component is in edit mode (editMode), and the selected user's ID (selectedID). The table state is used to control the visibility of the user data table. formData is an object that holds the user's input data for the form fields. 2. Input Handling : The handleInputChange function is responsible for updating the formData state when the user enters data into the form fields. It dynamically updates the form data based on the input's name and value. 3. Form Submission : The handleFormSubmit function is triggered when the user submits the form. It dispatches actions to either add a new user or update an existing user based on whether the component is in edit mode. After submission, the form fields are cleared, and various state variables are reset to control the form's visibility and edit mode. 4. User Data Management : Two functions, handleDeleteUser and handleUpdateUser, are responsible for interacting with the Redux store. handleDeleteUser dispatches the deleteUser action, which removes a user with a specified ID from the store. handleUpdateUser is used to edit an existing user's information. It sets the form data with the user's details and updates the component's state to enter edit mode. 5. Render Structure : The component is structured with HTML elements and CSS classes to create a user-friendly interface. It includes a form for adding or editing users and a table to display user data. The form's visibility is controlled by the visible state. The table is displayed when there is user data (users array) and the component is not in edit mode (table is true). User data is mapped and displayed in rows with buttons for deleting and editing users. 6. Redux Integration : The component interacts with the Redux store through the useSelector and useDispatch hooks. useSelector is used to access the users array from the store, allowing the component to display and manipulate user data. useDispatch provides access to the dispatch function, allowing the component to send actions to the store for adding, updating, or deleting users.  By combining these elements, the component demonstrates how to use Redux for managing the state of a user data management system in a React application. It simplifies state management, making it easier to perform CRUD (Create, Read, Update, Delete) operations on user records. This code showcases the power of Redux for maintaining application state and provides a user-friendly interface for managing user data efficiently. Output would be like this:  
Redux for beginners with a mini-project
Redux for beginners with a mini-project Redux is a powerful library for managing the state of your JavaScript applications. It follows a unidirectional data flow pattern, making it easier to manage the state, especially in complex or multi-panel applications. Here, we'll provide a beginner-friendly explanation and a mini-project example to help you understand Redux better. What is Redux? Redux is an open-source JavaScript library introduced by Dan Abramov and Andrew Clark in 2015. It's designed to help manage the synchronous state of applications. It offers several benefits, including centralized state management, easier debugging, and strong community support.   Benefits of Redux: Centralized State Management:  Redux provides a single store to manage all the state of your application, making it easier to access and update the data. Easy Debugging:  You can track and log the state flow of Redux, which helps with debugging and reproducing bugs in your application. Community Support and Resources: Redux has a large developer community that can assist with solving both complex and minor problems.   Mini-Project Description: In this mini-project, we will create a simple form with fields for Name, Email, Mobile Number, Gender, and two buttons (Submit and Cancel). We'll use Redux to manage the application's state.   Here are the key concepts of Redux with the mini-project:   1. Action Types: Action types are constants that represent the various actions your application can perform. It's good practice to maintain all action types in one file.    For example: export const ADD_USER = 'ADD_USER'; export const UPDATE_USER = 'UPDATE_USER'; export const DELETE_USER = 'DELETE_USER';   2. Actions: Actions are plain JavaScript objects that describe what should happen in your application. They must have a "type" property to specify the action and a "payload" property to pass data to reducers.    For example:   export const addUser = (user) => ({  type: ADD_USER,  payload: user, });   export const deleteUser = (userId) => ({  type: DELETE_USER,  payload: userId, });   export const updateUser = (user) => ({  type: UPDATE_USER,  payload: user, });   3. Reducers: Reducers are pure functions that specify how your application's state changes in response to actions. They take the initial state and an action as parameters.    For example:   import { ADD_USER, UPDATE_USER, DELETE_USER } from "./action";   const initialState = {  users: [], };   const userReducer = (state = initialState, action) => {  switch (action.type) {  case ADD_USER:  return {  ...state,  users: [...state.users, action.payload],  };    case DELETE_USER:  const filteredUsers = state.users.filter((user) => user.id !== action.payload);  return {  ...state,  users: filteredUsers,  };    case UPDATE_USER:  const updatedUsers = state.users.map((user) =>  user.id === action.payload.id ? action.payload : user  );  return {  ...state,  users: updatedUsers,  };  default:  return state;  } };   export default userReducer;   In this example, We have a JavaScript Redux reducer for managing user data. It handles adding, updating, and deleting user records.   4. Store: The store is a central repository for your application's state. It holds the entire state and provides access and updates. You create a store by passing your reducer to createStore.    For example:   import { createStore } from "redux"; import reducer from "./reducer";   const store = createStore(reducer);   export default store;   In this mini-project, we've covered the basics of state management in Redux.  To use the states in your React project, you'll need to use two hooks from react-redux:   1. useSelector: useSelector is a hook used in functional components to access pieces of state from the global application state managed by Redux. It takes a selector function as an argument, defining how to extract data from the Redux store. When the data in the store changes, the component using useSelector will re-render to reflect the updated state.   import { useSelector } from "react-redux";   const count = useSelector((state) => state.reducers);   2. useDispatch: useDispatch is a hook that provides access to the Redux store's dispatch function. It allows you to dispatch actions to update the state.   import { useDispatch } from "react-redux";   const dispatch = useDispatch();   With these hooks, you can interact with the Redux store and manage your application's state efficiently.   Now we have already made the actionType, action, reducer and store now we have to use it in the React component.   import React, { useState } from "react"; import { useDispatch, useSelector } from "react-redux"; import { addUser, deleteUser, updateUser } from "../redux/action";   function DataDisplay() {   const [visible, isVisible] = useState(false);   const dispatch = useDispatch();   const users = useSelector((state) => state.users);   const [editMode, setEditMode] = useState(false);   const [selectedID, setSelectedID] = useState(null);   const [table, setTable] = useState(true);   const [formData, setFormData] = useState({     name: "",     email: "",     mobile: "",     gender: "male",   });     const handleInputChange = (e) => {     const { name, value } = e.target;     setFormData((prevData) => ({ ...prevData, [name]: value }));   };     const handleFormSubmit = (event) => {     event.preventDefault();       if (editMode) {       dispatch(updateUser({ id: selectedID, ...formData }));     } else {       dispatch(addUser({ id: Date.now(), ...formData }));     }       setFormData({       name: "",       email: "",       gender: "",       mobile: "",     });     console.log(formData);     isVisible(false);     setSelectedID(false);     setEditMode(false);     setTable(true);   };     const handleDeleteUser = (userId) => {     dispatch(deleteUser(userId));   };     const handleUpdateUser = (user) => {     console.log(user);     setFormData(user);       setEditMode(true);     isVisible(true);     setSelectedID(user.id);     setTable(false);   };     return (     <>       <div>         <div className="flex justify-between p-4 shadow rounded-3xl">           <div>             <h1 className="text-3xl">Crud Operation</h1>           </div>           <div>             <button               onClick={() => isVisible(true)}               className="border bg-green-500 p-2 pr-5 pl-5 text-lg rounded text-white"             >               {" "}               New User             </button>           </div>         </div>         {visible && (           <div>             <form               onSubmit={handleFormSubmit}               className="border-black  w-fit relative m-auto z-100 p-12 top-2 outline-groove bg-rgba(0.5, 0, 0, 0.5) rounded-lg shadow-lg"             >               <div className="">                 {/* <span>Name : </span> */}                 <input                   type="text"                   name="name"                   value={formData.name}                   onChange={handleInputChange}                   required                   placeholder="Enter your Name"                   className="border border-gray-300 p-2 rounded-lg w-96 text-left"                 />               </div>               <div>                 {/* <span>Email : </span> */}                 <input                   type="email"                   name="email"                   value={formData.email}                   onChange={handleInputChange}                   required                   placeholder="Enter your Email"                   className="border border-gray-300 p-2 rounded-lg w-96 m-2 text-left"                 />               </div>               <div>                 {/* <span>Mobile : </span> */}                 <input                   type="number"                   name="mobile"                   value={formData.mobile}                   onChange={handleInputChange}                   required                   placeholder="Enter your Mobile Number"                   className="border border-gray-300 p-2 w-96 rounded-lg text-left"                 />               </div>               <div className="text-left pl-3">                 <span>Gender : </span>                 <input                   type="radio"                   name="gender"                   value="male"                   checked={formData.gender === "male"}                   onChange={handleInputChange}                   className="form-checkbox text-blue-500 h-5 w-5"                 />                 <span className="ml-2 text-gray-700">Male</span>                 <input                   type="radio"                   name="gender"                   value="female"                   checked={formData.gender === "female"}                   onChange={handleInputChange}                   className="form-checkbox text-blue-500 h-5 w-5 m-3"                 />                 <span className="ml-2 text-gray-700">Female</span>               </div>                 <div className="mt-5 mb-0">                 <button                   type="submit"                   className="border bg-green-500 p-2 pr-5 pl-5 text-lg rounded text-white w-1/2"                 >                   {editMode ? "Edit" : "Submit"}                 </button>                 <button                   type="button"                   onClick={() => isVisible(false)}                   className="border bg-red-500 p-2 pr-5 pl-5 text-lg rounded text-white w-1/2"                 >                   Cancel                 </button>               </div>             </form>           </div>         )}           <>           {users.length > 0 ? (             table && (               <table className="min-w-full mt-3 border rounded-lg p-6">                 <tr>                   <th className="px-6 py-3 bg-gray-50 text-center text-xs leading-3 font-medium text-gray-500 uppercase tracking-wider">                     Name                   </th>                   <th className="px-6 py-3 bg-gray-50 text-center text-xs leading-4 font-medium text-gray-500 uppercase tracking-wider">                     Email                   </th>                   <th className="px-6 py-3 bg-gray-50 text-center text-xs leading-4 font-medium text-gray-500 uppercase tracking-wider">                     Mobile No                   </th>                   <th className="px-6 py-3 bg-gray-50 text-center text-xs leading-4 font-medium text-gray-500 uppercase tracking-wider">                     Gender                   </th>                   <th className="px-6 py-3 bg-gray-50 text-center text-xs leading-4 font-medium text-gray-500 uppercase tracking-wider">                     Action                   </th>                 </tr>                 {users.map((user) => (                   <tr key={user.id} className="text-center ml-6 p-8">                     <td className="px-6 py-3 bg-white-50 text-center text-xs leading-3 font-medium text-gray-500 uppercase tracking-wider">                       {user.name}                     </td>                     <td className="px-6 py-3 bg-white-50 text-center text-xs leading-3 font-medium text-gray-500 uppercase tracking-wider">                       {user.email}                     </td>                     <td className="px-6 py-3 bg-white-50 text-center text-xs leading-3 font-medium text-gray-500 uppercase tracking-wider">                       {user.mobile}                     </td>                     <td className="px-6 py-3 bg-white-50 text-center text-xs leading-3 font-medium text-gray-500 uppercase tracking-wider">                       {user.gender}                     </td>                     <button                       onClick={() => handleDeleteUser(user.id)}                       className="border bg-red-500 p-1 pr-5 pl-5 text-lg rounded text-white"                     >                       Delete                     </button>                     <button                       onClick={() => handleUpdateUser(user)}                       className="border ml-1 bg-yellow-200 p-1 pr-5 pl-5 text-lg rounded text-black"                     >                       Edit                     </button>                   </tr>                 ))}               </table>             )           ) : visible ? (             ""           ) : (             <h1 className="p-10 text-3xl">No data found</h1>           )}         </>       </div>     </>   ); }   export default DataDisplay;     Explanation of above code: 1. Component State Management: The component begins by importing the necessary dependencies and Redux actions for managing user data. It uses the useState hook to manage various local states, such as whether the form is visible (visible), whether the component is in edit mode (editMode), and the selected user's ID (selectedID). The table state is used to control the visibility of the user data table. formData is an object that holds the user's input data for the form fields.   2. Input Handling:   The handleInputChange function is responsible for updating the formData state when the user enters data into the form fields. It dynamically updates the form data based on the input's name and value.   3. Form Submission:   The handleFormSubmit function is triggered when the user submits the form. It dispatches actions to either add a new user or update an existing user based on whether the component is in edit mode. After submission, the form fields are cleared, and various state variables are reset to control the form's visibility and edit mode.   4. User Data Management:   Two functions, handleDeleteUser and handleUpdateUser, are responsible for interacting with the Redux store. handleDeleteUser dispatches the deleteUser action, which removes a user with a specified ID from the store. handleUpdateUser is used to edit an existing user's information. It sets the form data with the user's details and updates the component's state to enter edit mode.   5. Render Structure:   The component is structured with HTML elements and CSS classes to create a user-friendly interface. It includes a form for adding or editing users and a table to display user data. The form's visibility is controlled by the visible state. The table is displayed when there is user data (users array) and the component is not in edit mode (table is true). User data is mapped and displayed in rows with buttons for deleting and editing users.   6. Redux Integration:   The component interacts with the Redux store through the useSelector and useDispatch hooks. useSelector is used to access the users array from the store, allowing the component to display and manipulate user data.   useDispatch provides access to the dispatch function, allowing the component to send actions to the store for adding, updating, or deleting users.   By combining these elements, the component demonstrates how to use Redux for managing the state of a user data management system in a React application. It simplifies state management, making it easier to perform CRUD (Create, Read, Update, Delete) operations on user records.   This code showcases the power of Redux for maintaining application state and provides a user-friendly interface for managing user data efficiently.   Output would be like this:    
test
Redux for beginners with a mini-project Redux is a powerful library for managing the state of your JavaScript applications. It follows a unidirectional data flow pattern, making it easier to manage the state, especially in complex or multi-panel applications.    Here, we'll provide a beginner-friendly explanation and a mini-project example to help you understand Redux better.   What is Redux? Redux is an open-source JavaScript library introduced by Dan Abramov and Andrew Clark in 2015. It's designed to help manage the synchronous state of applications. It offers several benefits, including centralized state management, easier debugging, and strong community support.   Benefits of Redux: Centralized State Management:  Redux provides a single store to manage all the state of your application, making it easier to access and update the data. Easy Debugging:  You can track and log the state flow of Redux, which helps with debugging and reproducing bugs in your application. Community Support and Resources: Redux has a large developer community that can assist with solving both complex and minor problems.   Mini-Project Description: In this mini-project, we will create a simple form with fields for Name, Email, Mobile Number, Gender, and two buttons (Submit and Cancel). We'll use Redux to manage the application's state.   Here are the key concepts of Redux with the mini-project:   1. Action Types: Action types are constants that represent the various actions your application can perform. It's good practice to maintain all action types in one file.    For example: export const ADD_USER = 'ADD_USER'; export const UPDATE_USER = 'UPDATE_USER'; export const DELETE_USER = 'DELETE_USER';   2. Actions: Actions are plain JavaScript objects that describe what should happen in your application. They must have a "type" property to specify the action and a "payload" property to pass data to reducers.    For example:   export const addUser = (user) => ({  type: ADD_USER,  payload: user, });   export const deleteUser = (userId) => ({  type: DELETE_USER,  payload: userId, });   export const updateUser = (user) => ({  type: UPDATE_USER,  payload: user, });   3. Reducers: Reducers are pure functions that specify how your application's state changes in response to actions. They take the initial state and an action as parameters.    For example:   import { ADD_USER, UPDATE_USER, DELETE_USER } from "./action";   const initialState = {  users: [], };   const userReducer = (state = initialState, action) => {  switch (action.type) {  case ADD_USER:  return {  ...state,  users: [...state.users, action.payload],  };    case DELETE_USER:  const filteredUsers = state.users.filter((user) => user.id !== action.payload);  return {  ...state,  users: filteredUsers,  };    case UPDATE_USER:  const updatedUsers = state.users.map((user) =>  user.id === action.payload.id ? action.payload : user  );  return {  ...state,  users: updatedUsers,  };  default:  return state;  } };   export default userReducer;   In this example, We have a JavaScript Redux reducer for managing user data. It handles adding, updating, and deleting user records.   4. Store: The store is a central repository for your application's state. It holds the entire state and provides access and updates. You create a store by passing your reducer to createStore.    For example:   import { createStore } from "redux"; import reducer from "./reducer";   const store = createStore(reducer);   export default store;   In this mini-project, we've covered the basics of state management in Redux.  To use the states in your React project, you'll need to use two hooks from react-redux:   1. useSelector: useSelector is a hook used in functional components to access pieces of state from the global application state managed by Redux. It takes a selector function as an argument, defining how to extract data from the Redux store. When the data in the store changes, the component using useSelector will re-render to reflect the updated state.   import { useSelector } from "react-redux";   const count = useSelector((state) => state.reducers);   2. useDispatch: useDispatch is a hook that provides access to the Redux store's dispatch function. It allows you to dispatch actions to update the state.   import { useDispatch } from "react-redux";   const dispatch = useDispatch();   With these hooks, you can interact with the Redux store and manage your application's state efficiently.   Now we have already made the actionType, action, reducer and store now we have to use it in the React component.   import React, { useState } from "react"; import { useDispatch, useSelector } from "react-redux"; import { addUser, deleteUser, updateUser } from "../redux/action";   function DataDisplay() {   const [visible, isVisible] = useState(false);   const dispatch = useDispatch();   const users = useSelector((state) => state.users);   const [editMode, setEditMode] = useState(false);   const [selectedID, setSelectedID] = useState(null);   const [table, setTable] = useState(true);   const [formData, setFormData] = useState({     name: "",     email: "",     mobile: "",     gender: "male",   });     const handleInputChange = (e) => {     const { name, value } = e.target;     setFormData((prevData) => ({ ...prevData, [name]: value }));   };     const handleFormSubmit = (event) => {     event.preventDefault();       if (editMode) {       dispatch(updateUser({ id: selectedID, ...formData }));     } else {       dispatch(addUser({ id: Date.now(), ...formData }));     }       setFormData({       name: "",       email: "",       gender: "",       mobile: "",     });     console.log(formData);     isVisible(false);     setSelectedID(false);     setEditMode(false);     setTable(true);   };     const handleDeleteUser = (userId) => {     dispatch(deleteUser(userId));   };     const handleUpdateUser = (user) => {     console.log(user);     setFormData(user);       setEditMode(true);     isVisible(true);     setSelectedID(user.id);     setTable(false);   };     return (     <>       <div>         <div className="flex justify-between p-4 shadow rounded-3xl">           <div>             <h1 className="text-3xl">Crud Operation</h1>           </div>           <div>             <button               onClick={() => isVisible(true)}               className="border bg-green-500 p-2 pr-5 pl-5 text-lg rounded text-white"             >               {" "}               New User             </button>           </div>         </div>         {visible && (           <div>             <form               onSubmit={handleFormSubmit}               className="border-black  w-fit relative m-auto z-100 p-12 top-2 outline-groove bg-rgba(0.5, 0, 0, 0.5) rounded-lg shadow-lg"             >               <div className="">                 {/* <span>Name : </span> */}                 <input                   type="text"                   name="name"                   value={formData.name}                   onChange={handleInputChange}                   required                   placeholder="Enter your Name"                   className="border border-gray-300 p-2 rounded-lg w-96 text-left"                 />               </div>               <div>                 {/* <span>Email : </span> */}                 <input                   type="email"                   name="email"                   value={formData.email}                   onChange={handleInputChange}                   required                   placeholder="Enter your Email"                   className="border border-gray-300 p-2 rounded-lg w-96 m-2 text-left"                 />               </div>               <div>                 {/* <span>Mobile : </span> */}                 <input                   type="number"                   name="mobile"                   value={formData.mobile}                   onChange={handleInputChange}                   required                   placeholder="Enter your Mobile Number"                   className="border border-gray-300 p-2 w-96 rounded-lg text-left"                 />               </div>               <div className="text-left pl-3">                 <span>Gender : </span>                 <input                   type="radio"                   name="gender"                   value="male"                   checked={formData.gender === "male"}                   onChange={handleInputChange}                   className="form-checkbox text-blue-500 h-5 w-5"                 />                 <span className="ml-2 text-gray-700">Male</span>                 <input                   type="radio"                   name="gender"                   value="female"                   checked={formData.gender === "female"}                   onChange={handleInputChange}                   className="form-checkbox text-blue-500 h-5 w-5 m-3"                 />                 <span className="ml-2 text-gray-700">Female</span>               </div>                 <div className="mt-5 mb-0">                 <button                   type="submit"                   className="border bg-green-500 p-2 pr-5 pl-5 text-lg rounded text-white w-1/2"                 >                   {editMode ? "Edit" : "Submit"}                 </button>                 <button                   type="button"                   onClick={() => isVisible(false)}                   className="border bg-red-500 p-2 pr-5 pl-5 text-lg rounded text-white w-1/2"                 >                   Cancel                 </button>               </div>             </form>           </div>         )}           <>           {users.length > 0 ? (             table && (               <table className="min-w-full mt-3 border rounded-lg p-6">                 <tr>                   <th className="px-6 py-3 bg-gray-50 text-center text-xs leading-3 font-medium text-gray-500 uppercase tracking-wider">                     Name                   </th>                   <th className="px-6 py-3 bg-gray-50 text-center text-xs leading-4 font-medium text-gray-500 uppercase tracking-wider">                     Email                   </th>                   <th className="px-6 py-3 bg-gray-50 text-center text-xs leading-4 font-medium text-gray-500 uppercase tracking-wider">                     Mobile No                   </th>                   <th className="px-6 py-3 bg-gray-50 text-center text-xs leading-4 font-medium text-gray-500 uppercase tracking-wider">                     Gender                   </th>                   <th className="px-6 py-3 bg-gray-50 text-center text-xs leading-4 font-medium text-gray-500 uppercase tracking-wider">                     Action                   </th>                 </tr>                 {users.map((user) => (                   <tr key={user.id} className="text-center ml-6 p-8">                     <td className="px-6 py-3 bg-white-50 text-center text-xs leading-3 font-medium text-gray-500 uppercase tracking-wider">                       {user.name}                     </td>                     <td className="px-6 py-3 bg-white-50 text-center text-xs leading-3 font-medium text-gray-500 uppercase tracking-wider">                       {user.email}                     </td>                     <td className="px-6 py-3 bg-white-50 text-center text-xs leading-3 font-medium text-gray-500 uppercase tracking-wider">                       {user.mobile}                     </td>                     <td className="px-6 py-3 bg-white-50 text-center text-xs leading-3 font-medium text-gray-500 uppercase tracking-wider">                       {user.gender}                     </td>                     <button                       onClick={() => handleDeleteUser(user.id)}                       className="border bg-red-500 p-1 pr-5 pl-5 text-lg rounded text-white"                     >                       Delete                     </button>                     <button                       onClick={() => handleUpdateUser(user)}                       className="border ml-1 bg-yellow-200 p-1 pr-5 pl-5 text-lg rounded text-black"                     >                       Edit                     </button>                   </tr>                 ))}               </table>             )           ) : visible ? (             ""           ) : (             <h1 className="p-10 text-3xl">No data found</h1>           )}         </>       </div>     </>   ); }   export default DataDisplay;     Explanation of above code: 1. Component State Management: The component begins by importing the necessary dependencies and Redux actions for managing user data. It uses the useState hook to manage various local states, such as whether the form is visible (visible), whether the component is in edit mode (editMode), and the selected user's ID (selectedID). The table state is used to control the visibility of the user data table. formData is an object that holds the user's input data for the form fields.   2. Input Handling:   The handleInputChange function is responsible for updating the formData state when the user enters data into the form fields. It dynamically updates the form data based on the input's name and value.   3. Form Submission:   The handleFormSubmit function is triggered when the user submits the form. It dispatches actions to either add a new user or update an existing user based on whether the component is in edit mode. After submission, the form fields are cleared, and various state variables are reset to control the form's visibility and edit mode.   4. User Data Management:   Two functions, handleDeleteUser and handleUpdateUser, are responsible for interacting with the Redux store. handleDeleteUser dispatches the deleteUser action, which removes a user with a specified ID from the store. handleUpdateUser is used to edit an existing user's information. It sets the form data with the user's details and updates the component's state to enter edit mode.   5. Render Structure:   The component is structured with HTML elements and CSS classes to create a user-friendly interface. It includes a form for adding or editing users and a table to display user data. The form's visibility is controlled by the visible state. The table is displayed when there is user data (users array) and the component is not in edit mode (table is true). User data is mapped and displayed in rows with buttons for deleting and editing users.   6. Redux Integration:   The component interacts with the Redux store through the useSelector and useDispatch hooks. useSelector is used to access the users array from the store, allowing the component to display and manipulate user data.   useDispatch provides access to the dispatch function, allowing the component to send actions to the store for adding, updating, or deleting users.   By combining these elements, the component demonstrates how to use Redux for managing the state of a user data management system in a React application. It simplifies state management, making it easier to perform CRUD (Create, Read, Update, Delete) operations on user records.   This code showcases the power of Redux for maintaining application state and provides a user-friendly interface for managing user data efficiently.   Output would be like this:     Meta Description:   Learn the fundamentals of Redux, a powerful JavaScript library for state management, with a focus on action types, actions, reducers, and the central store. Explore a mini-project demonstrating how to manage application state, and discover how to use useSelector and useDispatch hooks to interact with the Redux store efficiently.  
Table td Drag and Drop in React JS: Enhancing User Experience
In the world of web development, React JS has gained immense popularity for its ability to create dynamic and interactive user interfaces. One crucial feature that can greatly enhance the user experience is table td drag and drop in React JS. This functionality allows users to effortlessly rearrange table data by dragging and dropping table cells. In this article, we will explore the implementation of this feature using React JS and delve into its benefits for web applications. The Power of Table td Drag and Drop in React JS Streamlining Data Manipulation with Drag and Drop Tables are commonly used to present structured data in web applications. However, manipulating table data can sometimes be cumbersome, especially when it involves rearranging rows or columns. With the power of drag and drop in React JS, users can now easily modify the order of table cells by dragging them to desired locations. This intuitive interaction provides a seamless way to organize and prioritize data. Enhancing User Experience and Productivity The drag and drop functionality not only simplifies data manipulation but also enhances the overall user experience. By enabling users to rearrange table cells effortlessly, React JS empowers them to customize the presentation of data according to their preferences. This increased control over the user interface boosts productivity and allows users to focus on the most relevant information. Making Complex Operations Simple React JS provides a robust set of tools for implementing drag and drop functionality. With the help of libraries like React DnD, developers can effortlessly integrate drag and drop features into their applications. This simplifies complex operations such as reordering table rows or columns, making the development process more efficient and less time-consuming. Implementing Table td Drag and Drop in React JS To implement table td drag and drop in React JS, we need to follow a series of steps. Let's dive into the details: Step 1: Setting Up a React JS Project Before we can start implementing drag and drop functionality, we need to set up a React JS project. Here's a brief overview of the steps involved: Install Node.js and npm (Node Package Manager) if they are not already installed. Open a terminal or command prompt and navigate to the desired location for your project. Use the command npx create-react-app drag-and-drop-app to create a new React JS project called "drag-and-drop-app." Once the project is created, navigate into the project folder using the command cd drag-and-drop-app. Step 2: Installing React DnD Library React DnD is a popular library that simplifies the implementation of drag and drop functionality in React JS applications. To install React DnD, follow these steps: In the terminal or command prompt, make sure you are inside the project folder. Use the command npm install react-dnd react-dnd-html5-backend to install React DnD and its HTML5 backend. Step 3: Creating a Draggable Table Once the project is set up and the required libraries are installed, we can proceed to create a draggable table. Here's how we can accomplish this: Open the project in your preferred code editor. In the "src" folder, create a new component called "DraggableTable.js" using the command touch DraggableTable.js. Open "DraggableTable.js" and import the necessary components from React and React DnD. import React from 'react'; import { useDrag, useDrop } from 'react-dnd';   Define the structure of the draggable table by creating a new functional component. const DraggableTable = () => { // Component logic goes here };   Inside the component, define the individual table cells that are draggable. const DraggableCell = ({ cellData }) => { const [{ isDragging }, drag] = useDrag(() => ({ type: 'cell', item: { cellData }, collect: (monitor) => ({ isDragging: monitor.isDragging(), }), })); return ( <td ref={drag} style={{ opacity: isDragging ? 0.5 : 1 }}> {cellData} </td> ); };   Create a new functional component for the table itself.  const DraggableTable = () => { // Component logic goes here return ( <table> <tbody> <tr> <DraggableCell cellData="Data 1" /> <DraggableCell cellData="Data 2" /> <DraggableCell cellData="Data 3" /> </tr> {/* Additional table rows go here */} </tbody> </table> ); }; Export the DraggableTable component at the end of the file. export default DraggableTable;   Step 4: Implementing Drop Functionality In addition to making table cells draggable, we also need to implement the drop functionality. This will allow users to drop the dragged cells in desired locations within the table. Here's how we can achieve this: Inside the DraggableTable component, import the necessary components from React DnD. import { useDrag, useDrop } from 'react-dnd';   Modify the DraggableCell component to enable drop functionality. const DraggableCell = ({ cellData }) => { const [{ isDragging }, drag] = useDrag(() => ({ type: 'cell', item: { cellData }, collect: (monitor) => ({ isDragging: monitor.isDragging(), }), })); const [{ canDrop, isOver }, drop] = useDrop(() => ({ accept: 'cell', drop: () => { // Logic for handling dropped cell goes here }, collect: (monitor) => ({ canDrop: monitor.canDrop(), isOver: monitor.isOver(), }), })); const isActive = canDrop && isOver; return ( <td ref={drag(drop)} style={{ opacity: isDragging ? 0.5 : 1, backgroundColor: isActive ? 'yellow' : 'transparent' }}> {cellData} </td> ); };  
How to Install Tailwind in React.js
Introduction Are you a React.js developer looking to enhance your web development projects with the power and flexibility of Tailwind CSS? Look no further! In this comprehensive guide, we will walk you through the process of installing Tailwind CSS in React.js, enabling you to leverage the full potential of this popular utility-first CSS framework. From step-by-step instructions to FAQs and expert tips, we've got you covered. Let's dive in! How to Install Tailwind in React.js So, you're ready to incorporate the awesomeness of Tailwind CSS into your React.js application? Follow the simple steps below to get started: Step 1: Create a New React.js Project Before we begin, make sure you have Node.js and npm (Node Package Manager) installed on your machine. Open your terminal and run the following command to create a new React.js project: npx create-react-app my-tailwind-project This command sets up a new React.js project named "my-tailwind-project" in a directory of the same name. Once the project is created, navigate to the project directory using the command: cd my-tailwind-project Step 2: Install Tailwind CSS To install Tailwind CSS, open your terminal and run the following command: npm install tailwindcss This command fetches and installs the latest version of Tailwind CSS from the npm registry. Step 3: Configure Tailwind CSS After installing Tailwind CSS, you need to set up the configuration files. Run the following command in your terminal: npx tailwindcss init This command creates a tailwind.config.js file in your project's root directory. This file allows you to customize various aspects of Tailwind's default configuration. Step 4: Import Tailwind CSS To import Tailwind CSS styles into your React.js project, open the src/index.css file and add the following line at the top: @import 'tailwindcss/base'; @import 'tailwindcss/components'; @import 'tailwindcss/utilities'; Step 5: Apply Tailwind CSS Classes You're almost there! Now you can start using Tailwind CSS classes in your React components. Open a React component file, such as src/App.js, and add Tailwind CSS classes to your HTML elements as needed. For example: import React from 'react'; function App() { return ( <div className="bg-blue-500 text-white p-4"> <h1 className="text-3xl font-bold">Hello, Tailwind!</h1> <p className="mt-2">Tailwind CSS is awesome!</p> </div> ); } export default App; Save the file, and you'll see the Tailwind CSS styles applied to your components.
How to create a new React JS project.
React JS is a popular open-source JavaScript library for building user interfaces. It was created by Facebook in 2011 and is currently maintained by Facebook and a community of developers. React is widely used for developing single-page applications, mobile applications, and complex web applications. React is based on the concept of reusable components. A component is a modular, self-contained block of code that encapsulates a specific functionality or user interface element. React components can be composed to create complex user interfaces, and they can be reused across different parts of an application. One of the main benefits of React is its ability to handle complex user interfaces and large-scale applications with ease. It provides a virtual DOM, which is a lightweight representation of the actual DOM, and updates only the necessary parts of the UI when a change occurs, resulting in better performance and faster rendering. React is also highly flexible and can be used with other libraries and frameworks, such as Redux for state management, React Router for routing, and Axios for data fetching. Overall, React has become a popular choice for building modern web applications due to its flexibility, modularity, and performance benefits. 1. Install Node.js and NPM Install Node.js and npm on your machine if you haven't already. You can download and install it from the official website: https://nodejs.org/ 2. Open terminal Open your terminal, by pressing the shortcut key CTRL + ALT + T or go to the menu and click Terminal and navigate to the folder where you want to create the project. 3. Create a new project Create a new React project using the create-react-app command. To do this, run the following command in your terminal: npx create-react-app new-project Here, new-project is the name of the project you want to create. You can replace it with any other name you like. 4. Checkout into the project Once the project is created, navigate to the project folder by running the following command in your terminal: cd new-project 1. Start the development server Now, you can start the development server by running the following command: npm start This will open the development server in your default browser at http://localhost:3000/. You can now start building your website using React components. You can create a new component for each page and include them in your App.js file. You can also add CSS styles and other functionality as needed. Once you have finished building your blog content, you can deploy your project to a hosting platform such as Netlify, Heroku, or GitHub Pages. That's it! You now have a new React JS project.
Javascript Convert Date and Time Example
In this article, we will share with you how to convert date and time in various examples. in the web application, we will be done much functionality with javascript and it is very easy to do from the client-side. many times we will need to convert date and time in many formats. here we will be going to share with you some basic needful dates and times converted with hours, minutes, mili-seconds, etc... Example - 1 Convert hours to minutes : Here, we are creating one javascript function and write into it how to convert hours to minutes in javascript. <!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <title>Convert hours to minutes - HackTheStuff</title> </head> <body> <script type = "text/javascript"> function convertHourstoMinute(hours) { return Math.floor(hours * 60); } var minutes = convertHourstoMinute(2); document.write("Convert hours to minutes is :- " + minutes); </script> </body> Example - 2 Convert hours to seconds : In this example, we will create one javascript function that returns us seconds of the passed hours value in the function. <!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <title>Convert hours to seconds - HackTheStuff<</title> </head> <body> <script type = "text/javascript"> function convertHourstoSeconds(hours) { return Math.floor(hours * 60 * 60); } var seconds = convertHourstoSeconds(2); document.write("Converting hours to seconds is :- " + seconds); </script> </body> </html> Example - 3 Convert hours to milliseconds : In this above example, we can see how to convert hours to milliseconds in javascript. <!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <title>Convert hours to milliseconds - HackTheStuff<</title> </head> <body> <script type = "text/javascript"> function convertHourstoMilliseconds(hours) { return Math.floor(hours * 60 * 60 * 1000); } var milliseconds = convertHourstoMilliseconds(2); document.write("Converting hours to milliseconds is :- " + milliseconds); </script> </body> </html> Example - 4 Convert minutes to seconds : In this example, we will see how to convert minutes to seconds in javascript. <!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <title>Convert minutes to seconds - HackTheStuff</title> </head> <body> <script type = "text/javascript"> function convertMinutestoSeconds(minutes) { return Math.floor(minutes * 60); } var minutesToSeconds = convertMinutestoSeconds(2); document.write("Converting minutes to seconds is :- " + minutesToSeconds); </script> </body> </html> Example - 5 Convert minutes to milliseconds : In this example, we see how to convert minutes to milliseconds in the javascript example. <!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <title>Convert minutes to Milli seconds - HackTheStuff</title> </head> <body> <script type = "text/javascript"> function convertMinutestoMilliSeconds(minutes) { return Math.floor(minutes * 60 * 1000); } var minutesToMilliSeconds = convertMinutestoMilliSeconds(2); document.write("Converting minutes to milli seconds is :- " + minutesToMilliSeconds); </script> </body> </html> Example - 6 Convert seconds to milliseconds : In this example, we see how to convert seconds to milliseconds in javascript. <!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <title>Convert seconds to milliseconds - HackTheStuff</title> </head> <body> <script type = "text/javascript"> function convertSecondstoMilliSeconds(seconds) { return Math.floor(seconds * 1000); } var secondsToMilliSeconds = convertSecondstoMilliSeconds(2); document.write("Converting seconds to milliseconds is :- " + secondsToMilliSeconds); </script> </body> </html> Example - 7 Convert date to milliseconds : In this example, we see how to convert date to milliseconds in javascript. <!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <title>Convert date to milliseconds - HackTheStuff</title> </head> <body> <script type = "text/javascript"> var date = new Date(); var milliseconds = date.getTime(); document.write("Converting date to milliseconds is :- " + milliseconds); </script> </body> </html> Example - 8 Convert seconds to hh mm ss : In this example, we see how to convert seconds to hh mm ss format. <html lang="en"> <head> <meta charset="utf-8"> <title>Convert seconds to hh mm ss - HackTheStuff</title> </head> <body> <script type = "text/javascript"> function convertSecondsTo(sec) { var hours = Math.floor(sec / 3600); var minutes = Math.floor((sec - (hours * 3600)) / 60); var seconds = sec - (hours * 3600) - (minutes * 60); seconds = Math.round(seconds * 100) / 100 var result = (hours < 10 ? "0" + hours : hours); result += "-" + (minutes < 10 ? "0" + minutes : minutes); result += "-" + (seconds < 10 ? "0" + seconds : seconds); return result; } var secondsTo = convertSecondsTo(1000); document.write("Converting to seconds in HH-MM-SS format :- " + secondsTo); </script> </body> </html> We hope you like this small article and it will be help you a lot.
How to get Local Time Instead of Server Time
Suppose you are managing blog website and your user-base location are different instead of specific region. In the blog, you are displaying post creation date and times, so it is become important that you display different time according to user's location time instead of your server's time. In this article we will display time according to user timezone instead of server time. For displaying time, we will use Moment.js library. You can also use 3rd party API services, like GeoIP to get user's timezone from their IP addresses. Moment.js is the most innovative Javascript library for displaying and manipulating time. It is designed to work in the browser and Node.js. To use moment.js, first include bellow moment.js CDN file. <script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.24.0/moment.js"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/moment-timezone/0.5.27/moment-timezone-with-data-2012-2022.min.js"></script> And this is the element you want to display time in the blog post. <div class="post">     <span id="post-time"></span> </div> For the simplicity, we have used jQuery to understand code easily. We had used PHP as backend language to get server time and assigned it to Javascript variable. <script type="text/javascript">     $(document).ready(function() {         // created Javascript variable         var createdAt = moment('<?php echo($post->created_at) ?>');         // get timezone different between local server to UTC timezone         var timeDifference = new Date().getTimezoneOffset();         // change time according to local time from server time         var time = moment(createdAt).subtract(timeDifference, 'minutes').format('DD/MM/YYYY, hh:mm:ss A');         // change time in element         $('#post-time').html(time);     }); </script> That's it. <span id="post-time"> will change server time to user's local time. You can add format() method to change format of the time you want to display. I Hope you like this article. In upcoming article, we will discuss usage of Moment.js.