<!DOCTYPE html> <html> <head> <script src='http://libs.itshubao.com/jquery/2.1.3/jquery.min.js'></script> </head> <body> <p>The first paragraph in body.</p> <div style="border:1px solid;"> <p>The first paragraph in div.</p> <p>The last paragraph in div.</p> </div><br> <div style="border:1px solid;"> <p>The first paragraph in another div.</p> <p>The last paragraph in another div.</p> </div> <p>The last paragraph in body.</p> </body> </html>
$(document).ready(function(){ $("div p:first-child").css("background-color","yellow"); });