Tryit Editor v1.8

Source Code:
<!DOCTYPE html> <html> <head> <script src="../../ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"> </script> <script> $(document).ready(function(){ $("div p:nth-child(2)").css("background-color","yellow"); }); </script> </head> <body> <h1>This is a heading in body</h1> <p>The first paragraph in body.</p> <p>The second paragraph in body.</p> <div style="border:1px solid;"> <span>This is a span element in div</span> <p>The first paragraph in div (and the 2nd child in this div).</p> <p>The second 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 second paragraph in another div (and the 2nd child in this div).</p> <p>The last paragraph in another div.</p> </div> <p>The last paragraph in body.</p> </body> </html>
Result:
W3Schools.com - Try it yourself