Whether it is jquery or ExtJS, the modern JS framework has a large number of applications of JS features, such as: Anonymous functions, closures and so on, resulting in the source code is very difficult to read.
But to really use the front-desk UI technology, you still need to understand these concepts in depth.
Here are a few of the best articles to introduce JavaScript basics:
- The details to note when JavaScript starts and improves: Closure section: http://msdn.microsoft.com/zh-cn/library/hh968324.aspx
- Learn JavaScript closures (Closure): http://www.ruanyifeng.com/blog/2009/08/learning_javascript_closures.html
- Anonymous functions and function closures in javascript: http://www.cnblogs.com/rainman/archive/2009/05/04/1448899.html
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