I’m often confronted with the need to take a collection of values and transform them into a different set of values. For example, I want to use Twitter’s search API to get a list of tweets on a certain topic. However, I am only interested in retrieving the URLs to the home pages of each ... [More]

Most web developers are keenly aware of the browser’s same-origin policy which prevents document elements (including scripts) from accessing elements of a document from a different origin. A document is considered to be of the same origin if it shares the same protocol, port, and host. For exa... [More]

JavaScript is definitely an interesting language. Unlike typical server-side code, we will often sacrifice readability for brevity in order to save a few bytes. Thanks to the many JavaScript compression apps out there, we don’t have to worry about this as much. But there are a few shortcuts I ... [More]

The information in this post was written for the ASP.NET AJAX 4.0 Preview 4, and is subject to change with future releases. A new feature in the ASP.NET AJAX 4.0 client library is the Function.validateParameters() method. I say “new,” but it has really been there all along as a th... [More]

If you’ve done any kind of web development, you’ve probably stumbled upon (and hopefully used) the Internet Explorer plugin Web Development Helper (affectionately called WebDevHelper) created by uber-Microsoftie Nikhil Kothari. It’s a great tool for exploring the DOM, tracing HTTP ... [More]