Empty String != null

For some of us out there, we might be assigning an empty string to various types of variables thinking that nothing might go wrong. However, that isn't the case. For different types of objects / components and for different types of variables or properties, by assigning an empty string might give you some unnecessary troubles. For example...

Time for some source codes: ImageSourceIssue.mxml

If you are using firebug or Charles or any other types of Web Developer Tools, you can easily identify the differences in the results for the 3 buttons. :)

* Click here for the demo shown in this post.
^ Click here for the source files for the demo.