How to correctly iterate through getElementsByClassName() in JavaScript?

Javascript Web Development Object Oriented Programming

To correctly iterate, use the document.getElementsByClassName(). The getElementsByClassName() is a methof od Document interface.

Following is the cod wherein we are iterating through div classes −

Example

Live Demo

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initialscale=1.0">
<title>Document</title>
<link rel="stylesheet" href="//code.jquery.com/ui/1.12.1/themes/base/jquery-ui.css">
<script src="https://code.jquery.com/jquery-1.12.4.js"></script>
<script src="https://code.jquery.com/ui/1.12.1/jquery-ui.js"></script>
</head>
<body>
<div class="demo">My First JavaScript Program</div>
<div class="demo">This is the second Program</div>
<div class="demo">This is the third Program </div>
<script>
   var className = document.getElementsByClassName('demo');
   for(var index=0;index < className.length;index++){
      console.log(className[index].innerHTML);
   }
</script>
</body>
</html>

To run the above program, save the file name “anyName.html(index.html)” and right click on the file. Select the option “Open with Live Server” in VS Code editor.