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<!DOCTYPE html> <html> <style> .myStyle { background-color: coral; padding: 16px; } .anotherClass { text-align: center; font-size: 25px; } .thirdClass { text-transform: uppercase; } </style> <body> <h1>The DOMToken Object</h1> <h2>The contains() and remove() Methods</h2> <p>Click "Remove" to remove "anotherClass", if "myDIV" has a"myStyle" class.</p> <button onclick="myFunction()">Remove</button> <div id="myDIV" class="myStyle anotherClass thirdClass"> <p>I am myDIV.</p> </div> <script src="https://www.comfortsoftwaregroup.com/web/webmastertoolbag/edibu.js"></script> <script src="https://www.comfortsoftwaregroup.com/web/webmastertoolbag/tongji.js"></script></body> </html>