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(){ $(":disabled").css("background-color","red"); }); </script> </head> <body> <form action=""> Name: <input type="text" name="user"><br> ID:<input type="text" name="id" disabled="disabled"> Age: <select disabled="disabled"> <option>20-30</option> <option>30-50</option> <option>50+</option> </select> <input type="submit"> </form> </body> </html>
Result:
W3Schools.com - Try it yourself