The Internet Explorer Team (the team that brings us IE 7) has posted a nice article about Javascript optimization. This is the first part of the scheduled 3 parts article. In this article, the main drive behind the optimization is to reduce the number of symbolic lookups made by the Javascript engine to map the variable name to its real object.
It is quite rare to find such optimization tips from the maker of the browser. I am glad finally IE team pays some attention to improve the Javascript development. We need more articles like this, as more and more Javascript code is written nowdays. In my current project which is using ASP.NET 1.1, about 75% of the UI code is written in Javascript, and the rest is the C# code behind.
Please find the article here
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