Use the jQuery prop() and html() Methods
You can simply use the jQuery prop() method to change the text of the buttons built using the HTML <input> element, whereas to change the text of the buttons which are created using the <button> element you can use the html() method.
The jQuery code in the following example will change the button text on document ready:
<!DOCTYPE html>
<html lang="en">
<head>
<title>jQuery Change Button Text</title>
<script src="https://code.jquery.com/jquery-3.4.1.min.js"></script>
<script>
$(document).ready(function(){
// Change text of input button
$("#myInput").prop("value", "Input New Text");
// Change text of button element
$("#myButton").html("Button New Text");
});
</script>
</head>
<body>
<input type="button" id="myInput" value="Input Text">
<button type="button" id="myButton">Button Text</button>
</body>
</html>
