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<!DOCTYPE html> <html> <head> <script src="/lib/jquery-1.12.2.min.js"></script> <script> $(document).ready(function(){ $("div").prevAll("p").css("background-color", "yellow"); }); </script> </head> <body> <h1>What will $("div").prevAll("p") select?</h1> <p>This is a p element</p> <h2>This is a heading</h2> <div style="border:1px solid black;padding:10px;"> <p>This is a p element inside a div element (will not be selected, because it does not share the same parent as the other p elements that are selected in this example).</p> </div> <p>This is a p element.</p> <p>This is another p element.</p> <div style="border:1px solid black;padding:10px;">This is a div element (the selection of sibling elements starts from this div).</div> <p>This is a p element (will not be selected, because it is not the previous sibling element of div. It is the <strong>next</strong> sibling element.)</p> </body> </html>