Event Listeners

Gavin Kistner Oct 3, 2008

General

Add event listeners for all browsers at once. Easy to use, for all browsers.

Notes

Created by: Gavin Kistner
Web Site: http://phrogz.net
Posted: October 3, 2008

Cross browser attach event function. For 'evt' pass a string value with the leading "on" omitted e.g.

AttachEvent(window,'load',MyFunctionNameWithoutParenthesis,false);

Source Code

Paste this source code into the designated areas.

External file

Paste this code into an external JavaScript file named: eventListeners.js

/* This script and many more are available free online at
The JavaScript Source!! http://www.javascriptsource.com
Created by: Gavin Kistner | http://phrogz.netLicensed under: U.S. Copyright
 */

//*** This code is copyright 2003 by Gavin Kistner, gavin@refinery.com
//*** It is covered under the license viewable at http://phrogz.net/JS/_ReuseLicense.txt
//*** Reuse or modification is free provided you abide by the terms of that license.
//*** (Including the first two lines above in your source code satisfies the conditions.)

function AttachEvent(obj,evt,fnc,useCapture){
	if (!useCapture) useCapture=false;
	if (obj.addEventListener){
		obj.addEventListener(evt,fnc,useCapture);
		return true;
	} else if (obj.attachEvent) return obj.attachEvent("on"+evt,fnc);
	else{
		MyAttachEvent(obj,evt,fnc);
		obj['on'+evt]=function(){ MyFireEvent(obj,evt) };
	}
} 

//The following are for browsers like NS4 or IE5Mac which don't support either
//attachEvent or addEventListener
function MyAttachEvent(obj,evt,fnc){
	if (!obj.myEvents) obj.myEvents={};
	if (!obj.myEvents[evt]) obj.myEvents[evt]=[];
	var evts = obj.myEvents[evt];
	evts[evts.length]=fnc;
}
function MyFireEvent(obj,evt){
	if (!obj || !obj.myEvents || !obj.myEvents[evt]) return;
	var evts = obj.myEvents[evt];
	for (var i=0,len=evts.length;i<len;i++) evts[i]();
}

Head

Paste this code into the HEAD section of your HTML document.


<script type="text/javascript" src="eventListeners.js"></script>

Leave a Response

(1 comment)

Hi,[br /]nice site! Where is the demo of the event snipplet? donno what it is until I see it.[br /]Thanks![br /]Jow

jow Oct 11, 2008

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