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<!DOCTYPE html> <html> <title>W3.JS</title> <link rel="stylesheet" href="https://www.w3schools.com/w3css/4/w3.css"> <script src="https://www.w3schools.com/lib/w3.js"></script> <body class="w3-container"> <h2>Testing W3.JS with CSS</h2> <h2>Sort List</h2> <p>Click the button to sort the list.</p> <p><button onclick="w3.sortHTML('#id01', 'li')" class="w3-button w3-black">Sort</button></p> <ul id="id01" class="w3-ul w3-black"> <li>Oslo</li> <li>Stockholm</li> <li>Helsinki</li> <li>Berlin</li> <li>Rome</li> <li>Madrid</li> </ul> </body> </html>
