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<!DOCTYPE html> <html> <head> <script src="/lib/jquery-1.12.2.min.js"></script> <script> $(document).ready(function(){ $(":enabled").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>