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Posted By

Leech on 07/21/06


Tagged

event listener


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Event Listener v1.4

Published in: JavaScript 

URL: http://jsfromhell.com/geral/event-listener

Cross-browser addEvent and removeEvent. Created: 2005.08.13 - Modified: 2005.11.20

Plain TextExpand 
  1. /*
  2. **************************************
  3. * Event Listener Function v1.4       *
  4. * Autor: Carlos R. L. Rodrigues      *
  5. **************************************
  6. */
  7. addEvent = function(o, e, f, s){
  8.     var r = o[r = "_" + (e = "on" + e)] = o[r] || (o[e] ? [[o[e], o]] : []), a, c, d;
  9.     r[r.length] = [f, s || o], o[e] = function(e){
  10.         try{
  11.             (e = e || event).preventDefault || (e.preventDefault = function(){e.returnValue = false;});
  12.             e.stopPropagation || (e.stopPropagation = function(){e.cancelBubble = true;});
  13.             e.target || (e.target = e.srcElement || null);
  14.             e.key = (e.which + 1 || e.keyCode + 1) - 1 || 0;
  15.         }catch(f){}
  16.         for(d = 1, f = r.length; f; r[--f] && (a = r[f][0], o = r[f][1], a.call ? c = a.call(o, e) : (o._ = a, c = o._(e), o._ = null), d &= c !== false));
  17.         return e = null, !!d;
  18.     }
  19. };
  20.  
  21. removeEvent = function(o, e, f, s){
  22.     for(var i = (e = o["_on" + e] || []).length; i;)
  23.         if(e[--i] && e[i][0] == f && (s || o) == e[i][1])
  24.             return delete e[i];
  25.     return false;
  26. };

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