Piotr Zalewa has created a really great playground, jsFiddle, for testing sample code and playing with the Web. With an area for the holy trinity of the Web (HTML, CSS, JS) and an output region, you can get right to hacking. (via Ajaxian)

Win 3.1 in the browser

To get my friend started I wrote a generic framework that would be very easy to write and extend to his own purposes. I start off with a small bookmarklet which is a small javascript function stuffed into a link. This link (when bookmarked, or preferably placed on the browser’s bookmark bar), when clicked will insert a div at the top of the page, attach a style sheet, and use ajax to get some html to populate the new div. With a few exceptions this bookmark will work on ANY page on the net.

RightJS is a new JavaScript framework. It takes many old, battle proven features, wraps them nicely, mixes with some new ideas and features, and as the result provides a tiny, fast and easy to use tool.

Nhập giờ giấc bạn muốn chỉ với 2 click thông qua widget dành cho jQuery này.

Thư viện JS mã nguồn mở của BBC, hỗ trợ cả những trình duyệt cổ như IE 5.5 và Safari 1.3

Giống ribbon trong Office 2k7

Thư viện UI cho jQuery: tab, tooltip, drag n' drop,...

Một widget rất thú vị được viết bằng mootools