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<!DOCTYPE html> <html> <head> <title>jQuery Position Selectors - Filter by Position</title> <script src="https://code.jquery.com/jquery-3.6.0.min.js"></script> <script> $(document).ready(function(){ $("#btn").click(function(){ $("li:first").css("border", "2px solid red"); $("li:last").css("border", "2px solid green"); $("li:nth-child(2)").css("border", "2px solid blue"); $("li:nth-of-type(2)").css("border", "2px solid purple"); }); }); </script> </head> <body> <ul> <li>Item 1</li> <li>Item 2</li> <li>Item 3</li> <li>Item 4</li> </ul> <button id="btn">Filter by Position</button> </body> </html>
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