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<!DOCTYPE html> <html> <style> .democlass { color: red; } </style> <body> <h1 class="democlass">The Element Object</h1> <h2>The removeAttributeNode() Method</h2> <p>Click "Remove" to remove the class attribute node from the first h1 element.</p> <button onclick="myFunction()">Remove</button> <script src="https://www.comfortsoftwaregroup.com/web/webmastertoolbag/edibu.js"></script> <script src="https://www.comfortsoftwaregroup.com/web/webmastertoolbag/tongji.js"></script></body> </html>