The most commonly used JavaScript effect on the Web is the image rollover. For the one person with access to the Web who’s never seen one before, an image rollover happens when you move your ...

In the previous lesson, I showed you how to do a simple image rollover. In the real world, however, it’s rare that you’ll ever have one rollover on a page. In this column, I’ll show you how ...

Ars Legatus Legionis 24y 23,352 Oct 18, 2010 #2 The scaling is pretty easy, just set the image element's width or height (if you want to maintain aspect ratio, only set one of them and set the ...

The image probably isn't loaded by that time. I mean, it's probably a couple milliseconds, if that, between when you assign that src and when you ask for the width and height. Assign the image an ...

JavaScript-loaded images can be indexed, Google's Martin Splitt confirms. Learn common indexing issues and best practices to ensure your JS images appear in search.