Js gets event object code_javascript skills

General approach:

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Or:

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The returned values ​​are all "[object Event]".
But what if this is the way?

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“Ask Baidu for internal affairs, and Google for external affairs.” This statement is true. After searching, there are quite a few answers, but most of them are similar (maybe a coincidence).
http://www.jb51.net/article/19408.htm
http://www.cnblogs.com/cuixiping/archive/2008/04/13/1150847.html
Foolish Old Man’s This article (seems like a repost) is quite insightful.

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Generally speaking, this kind of embedding is rarely used This method is not recommended because it will cause maintenance and development trouble.