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Function not working inside even listener script

Posted on 2011-02-18
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Last Modified: 2012-08-13
I found a great listener script that listens for the onResize method, but I'm trying to pass another function inside this function that will update the document.title object and display the window's width.  My problem is, I'm getting an undefined on my change() function.  Any ideas?
function change() {
		document.title = wWidth;
	}
	function attachEventHandler(element, eventToHandle, eventHandler) {
		if(element.attachEvent) {
			element.attachEvent(eventToHandle, eventHandler);
		} else if(element.addEventListener) {
			element.addEventListener(eventToHandle.replace("on", ""), eventHandler, false);
		} else {
			element[eventToHandle] = eventHandler;
	  	}
	}
	attachEventHandler(window, "onresize", function() {
		setTimeout("change()", 100);
		if(wWidth > 1000) {
			document.body.style.overflowY = "hidden";
		} else if(wWidth <= 1000) {
			document.body.style.overflowY = "scroll";
		}
	});

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Question by:pingeyeg
2 Comments
 
LVL 4

Expert Comment

by:LAMASE
ID: 34930759
try with a dummy

var wWidth;

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outside (and before) every function. This will make the variable "global"

http://www.webdevelopersnotes.com/tutorials/javascript/global_local_variables_scope_javascript.php3
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LVL 20

Accepted Solution

by:
Proculopsis earned 500 total points
ID: 34931774

Try this instead:

function change() {
	document.title = wWidth;
}

function attachEventHandler(element, eventToHandle, eventHandler) {
	if(element.attachEvent) {
		element.attachEvent(eventToHandle, eventHandler);
	} else if(element.addEventListener) {
		element.addEventListener(eventToHandle.replace("on", ""), eventHandler, false);
	} else {
		element[eventToHandle] = eventHandler;
  	}
}

attachEventHandler(window, "onresize", function() {
	window.wWidth = document.documentElement.clientWidth;
	setTimeout(change, 100);
	if(wWidth > 1000) {
		document.body.style.overflowY = "hidden";
	} else if(wWidth <= 1000) {
		document.body.style.overflowY = "scroll";
	}
});

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