Ajax Girl

Dustin Diaz has written an article on the Seven JavaScript Techniques You Should Be Using Today.

Dustin delves into:

• Branch when possible: When performance matters, it’s often advisable to branch out your functions in a way that ensures processor-intensive or memory-hungry tasks won’t be frequently repeated. One of the most common scenarios where this situation can arise is handling browser differences
• Make Flags: var w3 = !!(document.getElementById && document.createElement); The not operators (!!) simply perform a Boolean conversion. The first operator changes the type of the object on the right to a Boolean, and then the second will just reverse whatever the first returned
• Make bridges: function getUserNameByIdBridge (e) { getUserNameById(e.id); }
• Try Event Delegation: Read Christian Heilmann’s work
• Include methods with your getElementsByWhatever: Use callbacks. getElementsBySelector(’#example p a’, function(el) {}
• Encapsulate your code: (function() { ..... })();

Source: Ajaxian
Original Article: http://ajaxian.com/archives/seven-javascript-techniques-you-should-be-using-today