Use the JavaScript join() method
You can easily create a string by joining the elements of an array using the JavaScript join() method. The join() method also allow you to specify separator to separate the array elements. The default separator is comma (,). Let's take a look at the following example:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>JavaScript Create String by Joining Array Elements</title>
</head>
<body>
<script>
// Sample array
var colors = ["red", "green", "blue"];
// Joining array elements
alert(colors.join()); // Outputs: red,green,blue
alert(colors.join(", ")); // Outputs: red, green, blue
alert(colors.join("-")); // Outputs: red-green-blue
alert(colors.join(" + ")); // Outputs: red + green + blue
alert(colors.join("")); // Outputs: redgreenblue
</script>
</body>
</html>
