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<!DOCTYPE html> <html> <body> <h1>The HTMLCollection Object</h1> <h2>The item() Method</h2> <p>[0] is a shorthand for the item(0).</p> <p>Click "Change" to change the content of the first paragraph.</p> <button onclick="myFunction()">Change</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>