Set The Attribute For An Image Element?

Sep 23, 2010

I am trying to set the attribute for an image element.

If i run the following:

Code:

var imgMain = document.getElementById('<%=defaultImage.ClientID%>');
imgMain.setAttribute("data-zoomsrc", "tttt"); //not outputting
imgMain.src = url; //works

The url section works fine. If i check the source code, the attribute data-zoomsrc is never displayed. However, if i write it out in the javascript, i get the value i am after:

Code:
document.write(imgMain.getAttribute("data-zoomsrc"));
document.end

It's almost as though it's just never written to the browser.

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