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<!DOCTYPE html> <html> <head> <script src="/lib/jquery-1.12.2.min.js"></script> <script> $(document).ready(function(){ $("p").filter($("div p.intro")).css("background-color", "yellow"); }); </script> </head> <body> <div style="border:1px solid black;">This is a div element <h1>Welcome to My Homepage</h1> <p>My name is Donald.</p> <p class="intro">I live in Duckburg (will be selected).</p> <p>My best friend is Mickey.</p> </div> <p class="intro">This p element is outside the div element.</p> <p>This p element is also outside the div element.</p> </body> </html>