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<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>Delegation This</title> <script src="https://code.jquery.com/jquery-3.6.0.min.js"></script> <style>.active{color:red;font-weight:bold;}</style> </head> <body> <ul id="list"> <li class="item">One</li> <li class="item">Two</li> </ul> <button id="add">Add Item</button> <script> $("#list").on("click", ".item", function(){ $(this).toggleClass("active"); }); $("#add").click(function(){ $("#list").append("<li class='item'>New</li>"); }); </script> </body> </html>
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