Question

I need to stop users from entering a colon or pipe on our web script, and I’ve used this piece of code:

}
function colonFilter(evt)
{
  var e = event || evt; 
    var charCode = e.which || e.keyCode;

  if (charCode == 58 || charCode == 124)
  return false;

  return true;

}

It works fine in Chrome, however, when I access the site in Firefox it doesn’t work. What did I do wrong?

Answer 1

You’re not passing the event object to the function. Chrome mimics Internet Explorer and maintains a global “event”; Firefox does not.

<input name="description" type="text" onkeypress="return colonFilter(event);" size="60" maxlength="255" value="">

That’ll work in all browsers.