[thelist] set/getAttribute is not a function?

Jonathan Snook jonathan.snook at gmail.com
Fri Jun 15 18:47:02 CDT 2007

On 6/15/07, Jon Hughes <hughesj at firemtn.com> wrote:
>                         var image =
> document.getElementById(id).getElementsByTagName('img');
>                         alert(image.getAttribute('src'));
>                         alert(img);
>                         image.setAttribute('src',img);
> }
> For some reason, getAttribute and setAttribute give me the following
> error:
> getAttribute is not a function
> setAttribute is not a function

getElementsByTagName returns an array (I believe technically a
NodeList). So, if you know there's only one image that'll be returned
by that call, just add [0] to the end (the first element in the

var image = document.getElementById(id).getElementsByTagName('img')[0];


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