Adding event handler to iframe to invoke on keyup

Question

On the webpage I have iframe, in which I display some content.
I want to run a function if any key is pressed inside iframe (iframe is editable).

I can do it using a

Answer 1

I guess you meant "do it without using the script manager"?

You can do it this way (use attactEvent/addEventListener):

Or using jQuery's event handler for "keyup":

$('#iframe1').keyup(function(event){
  //... do your stuff here ..
  //use event.keyCode to get the asscoiated key
});

More info on keyboard event arg can be found here and here.