即将离开知乎
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https://www.sitepoint.com/demystifying-javascript-closures-callbacks-iifes/#immediately-invoked-function-expressions-iifes
您即将离开知乎,请注意您的帐号和财产安全。
https://www.sitepoint.com/demystifying-javascript-closures-callbacks-iifes/#immediately-invoked-function-expressions-iifes