Enter your name in the input field above.
It will change background color on keydown and keyup.
<!DOCTYPE html> <html> <head> <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js"> </script>//from w w w .j av a 2s. c o m <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"> </body> </html>