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(){ $("input").keydown(function(){ $("input").css("background-color","yellow"); }); $("input").keyup(function(){ $("input").css("background-color","pink"); }); }); </script> </head> <body> Enter your name: <input type="text"> <p>Enter your name in the input field above. It will change background color on keydown and keyup.</p> </body> </html>
Result:
W3Schools.com - Try it yourself