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<!DOCTYPE html> <html> <title>W3.JS</title> <body> <p>Click the button to hide all p elements inside div.</p> <button onclick="w3.hide('div p')">Hide</button> <div> <h2>Heading</h2> <p>This is a paragraph.</p> <p>This is also a paragraph.</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>