This web page will display Javascript Keycodes as you press keys on your keyboard. This is one of simplest and easy to use javascript key code tool which will respond to the key pressed and returns the JavaScript 'on-key pressed' key code. Key code is nothing more than numerical number which represents which key on your keyboard has been pressed and you can execute a function or certain piece of code if it matches the code. For example, if you want to run some code when enter key is pressed then you can use if statement in javascript and compare the javascript event key code with 13 (enter key code).