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Get key event ESC on document

/ Published in: JavaScript
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  1. document.onkeydown = function(e){ 
  2.           if (e == null) { // ie 
  3.             keycode = event.keyCode; 
  4.           } else { // mozilla 
  5.             keycode = e.which; 
  6.           } 
  7.           if(keycode == 27){ // escape, close box, esc 
  8.               //what you nedd
  9.           } 
  10.         };

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