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<html><title>W3.JS</title><script src="../lib/w3.js"></script><body><h2>Testing W3.JS in HTML</h2><p>Click the button to add a red background color to id="London".</p><p><button onclick="w3.addStyle('#London','background-color','red')">Add Style</button></p><div id="London" class="city"> <h2>London</h2> <p>London is the capital city of England.</p></div><div id="Paris" class="city"> <h2>Paris</h2> <p>Paris is the capital of France.</p> </div><div id="Tokyo" class="city"> <h2>Tokyo</h2> <p>Tokyo is the capital of Japan.</p></div></body><!-- Mirrored from www.w3schools.com/w3js/tryit.asp?filename=tryw3js_add_style_id by HTTrack Website Copier/3.x [XR&CO'2014], Wed, 21 Dec 2022 17:17:33 GMT --></html>