Robert Gravelle

The HTML5 Date Input control has been long awaited and makes inputting dates simple for both the user and the Web developer. Unfortunately, not all

Think that you can calculate date intervals without worrying about leap years? Think again. It's true that, as long as you follow the guidelines set out

Trying to learn date calculation functions in JavaScript? Find out easy-to-use static Date functions with our guide now.

There aren't very many native date calculation functions in JavaScript other than a lot of setters and getters. From date parsing to formatting to

HTML4's use of div and header tags to describe a document's structure has many limitations. First, the div tag acts as a generic block level division.

Shared Web Workers communicate with any script running in the same origin with them. Learn how to utilize them.

Before HTML5 introduced WebSockets, you had to rely on specialized technologies like Java applets (remember those?!) or, more recently, Flash. I covered

One of the most appealing features of the HTML5 File API is that you can pass the file data to the XmlHttpRequest object for uploading to a server. That

While error handling is not new to JavaScript, it seems that a lot of people aren't quite sure how to handle errors in the most productive way. Actually,

The dataTransfer object is a read-only Event property that holds data about the Drag & Drop operation and allows you to send data along with a dragged

After almost a decade and millions of downloads, HTML-Kit continues to be a favorite freeware HTML editor of web developers everywhere. Some of its

Have you ever tried to fill out a form that just wouldn't let you through? You might ask yourself what it is that you're doing wrong, but the problem