Object doesn't support this property or method

JavaScript
1

hi,

I get an error when I try to dynamically add an attribute to some elements, since I been getting the error “Object doesn’t support this property or method” in IE I reduced the attribute value to just alert.


function initialize_containers()
{
	var containers = document.getElementsByClassName("boxcontainer");

	var i = 0;
	for (i = 0; i < containers.length; i++)
	{
		containers[i].setAttribute("onmouseover", "alert('hello world');");
	}
}

window.onload = function() { initialize_containers(); };

note that in firefox all the elements with the class boxcontainer gets “hello world” alert. I removed this specific code (shown above) out of the page and the error in IE goes away, so I’m 100% sure nothing else is causing it. Any suggestions?

2

No it only gets executed immediately if you add () to the end like this:

element.onmouseover = function() {iframeshim(parm1,parm2)}();

3 
element.onmouseover = function() {iframeshim(parm1,parm2)};
4

Ah I didn’t know it can be used like that, always thought anything used within function() { … } got executed immediately.

5

That’s exactly the problem I’m facing now! I was just about to start a new thread, but was not sure whether I should or not.

Now that I can get elements with boxcontainer, I am now facing the problem with setAttribute(“onmouseover”, “alert(‘hello world’);”);

since there will be parameters can’t use it like element.onmouseover = iframeshim; where iframeshim function would have parameters.

Could anyone suggest alternative method to setAttribute?

6

Doesn’t IE also have issue with the setAttribute (esp with something like an attribute of “alert()”)??

7

You’ll need to emulate it: http://robertnyman.com/2008/05/27/the-ultimate-getelementsbyclassname-anno-2008/

8

It uses span tag, but other than that assigning id’s to all the spam is not an option, is there a IE alternative workaround for getElementsByClassName?

9

AFAIK, IE’s document object doesn’t support getElementsByClassName()

Can you get them some other way? eg. Id or tag?