To loop through all DOM elements on a page, use document.getElementsByTagName(‘*’). Loop through its length and display the result in console as in the below code −
var tags = document.getElementsByTagName("*");
for (var i=0, max=tags.length; i < max; i++) {
console.log(tags[i]);
}Example
<!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>
<h1>Demo</h1>
<label>
Enter the name:
<input type="text" id="txtName">
</label>
<button type="submit">Save</button>
<script>
var tags = document.getElementsByTagName("*");
for (var i=0, max=tags.length; i < max; i++) {
console.log(tags[i]);
}
</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.
Output
This will produce the following output −
