JS gets the value of any key on the keyboard (example code)_javascript skills

Without further ado, let’s go directly to the code

Copy the code The code is as follows:

function keyUp() {
if(navigator.appName == "Microsoft Internet Explorer"){
var keycode = event.keyCode; var keycode = keyUp.caller.arguments [0].which;
　　　　}
　　　　 alert(keycode);
　　　　　　}