Getting keyboard input details

Question

I have a textbox on which a keyup eventlistener is attached which is a JavaScript function, say exec(). Now the exec() method should not get called if some keys are pressed such as:

ctrl+ anything,
shift+anything,
alt+ anything.

Can someone guide me how do it?

Answer 1

You want to check some of the properties of the events.

textbox.onkeyup = function (e) {
  if (e.ctrlKey || e.altKey || e.shiftKey || e.metaKey) return;
  exec();
}