add image src from javascript function

ktsirig · #1 Mar 10th, 2008, 22:06

Hello,
I have a js function inside the head of a page of mine which takes 2 arguments that are created dynamically based on what I retrieve from a database.
My question is whether I can set the attribute src of the <img> tag through the js function. What I have is:

PHP: Select all


<script type="text/javascript">
function HideShow(myVar, mySecondVar) 
          { 
                if (document.getElementById(myVar).style.display == 'none') 
                { 
                    document.getElementById(myVar).style.display = 'inline'
                   -----> mySecondVar.src = "css/images/show.gif"
                } 
                else 
                { 
                    document.getElementById(myVar).style.display = 'none'
                  ----->  mySecondVar.src = "css/images/hide.gif" 
                    }
          } 
</script>

The lines with the arrow in front of them do not work, presumably there is a mistake in the syntax because I see no image...

I would greatly appreciate any help!

spinal007 · #2 Mar 14th, 2008, 11:38

The code looks fine. The most likely error is that "css/images/show.gif" does not exist.
This is a common mistake developers make when using relative paths.

on /index.htm "css/images/show.gif" points to:
/css/images/show.gif

on /folder/index.htm "css/images/show.gif" points to:
/folder/css/images/show.gif

Double check.

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add image src from javascript function