Question

I am writing event handlers in jQuery. I want to use a specific set of keys (eg arrow keys) for a particular action. Is there a shorthand notation for this?

I have this.

if(event.keycode == 37 || event.keyCode == 38 || event.keyCode == 39)

I’m wondering if there are ranges in JavaScript, like (37..40)?

Thanks in advance!

Answer 1

You can achieve the range effect by using the comparison operators, like so:

// keep a local reference to avoid consequent requests
var keyCode = event.keyCode;

// check if key code is in range
if(keyCode >= 37 && keyCode <= 40){
  // in range, do something
} else{
  // out of range, do something else
}