SWFObject is undefined Error Solution

When developing this website I ran into an error with my .swf logo that was causing this error in Internet Explorer: “SWFObject” is undefined. I will show you how I resolved this error, it was pretty simple.

Again, the problem at hand was that any Internet Explorer user who browsed to my site would encounter a error warning in the browser’s lower bar stating “‘SWFObject’ is undefined” and if double-clicked would see this error:

Looking at the code you can see that it says the exact line number of the problemed code.  After looking into my code I noticed that the this HTML was inserting the swf into my website with the following code:

 <object id="FlashID" classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000">

Next, a JavaScript code would register that object:

<script type="text/javascript"></script>

It turns out that the swfobject.js file the script above was looking is not in the same directory… therefore, the SWF was not being registered and is in turn undefined causing the “SWFObject” is undefined error in Internet Explorer. To resolve this I simple defined the path to the swfobject.js script using

<script type="text/javascript" src="path/to/swfobject.js" />

as seen here in the code:

<script src="../../../../Scripts/swfobject_modified.js" type="text/javascript"></script>

Poof! The error is gone and everything is fine, fine, fine. Let me know if this works for you or if you are having problems in the comments below. Thanks!

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