JavaScript Made Easy: How to Make a Simple Image Rollover. By Dori Smith. JAN 31, 2001 4:00 pm PST. ... This line checks to see if the JavaScript code can detect any images on the page.

As always, only use this code if the browser you’re designing for supports image manipulation via JavaScript (that is, Netscape 3 or later and Internet Explorer 4 or later).

JavaScript is getting mocked, but in a good way. The JavaScript-based Kakapo.js HTTP mocking library enables developers to replicate back-end logic in a declarative manner in the browser. Thus ...