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2015-06-21

function与感叹号

e.g.

!function(){ alert("hello")}()

equals:     

(function(){alert("hello")})()

equals:

(function(){alert("hello")}())

共同目的:将函数声明转化成表达式,在进行函数调用

参考:http://swordair.com/function-and-exclamation-mark/

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