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<html><title>W3.JS</title><style>.marked { background-color: orange; font-size: 30px; padding: 16px; color: white;}</style><script src="../lib/w3.js"></script><body><h2>Testing W3.JS in HTML</h2><p>Click the button to remove the "marked" class from all elements with class="city".</p><p><button onclick="w3.removeClass('.city','marked')">Remove Class</button></p><div id="London" class="city marked"> <h2>London</h2> <p>London is the capital city of England.</p></div><br><div id="Paris" class="city marked"> <h2>Paris</h2> <p>Paris is the capital of France.</p> </div><br><div id="Tokyo" class="city marked"> <h2>Tokyo</h2> <p>Tokyo is the capital of Japan.</p></div></body><!-- Mirrored from www.w3schools.com/w3js/tryit.asp?filename=tryw3js_remove_class_class by HTTrack Website Copier/3.x [XR&CO'2014], Mon, 05 Sep 2022 14:57:26 GMT --></html>