Built-in JavaScript objects and functions are ones you'll use all the time. Here's how to use Object, JSON, String, Math, Date, and console in your JavaScript programs.

Learn to create a simple XPCOM component with JavaScript that exposes one method: reverseIt (). Written by Phillip Perkins, Contributor June 22, 2005, 12:39 a.m. PT ...

JavaScript creates an XMLHttpRequest object. This object sends a request to the corresponding web server. The server processes the request and sends a response back to the browser. JavaScript reads ...

Image () object in JavaScript and pass it the URL of the image you want preloaded. Say we have an image called heavyimagefile.jpg, which we want to ...