（...（））vs.（...）（）在javascript闭包 [英] (...()) vs. (...)() in javascript closures

问题描述

我知道这是愚蠢的，但这之间有任何区别：

I know this is silly, but there's any difference between this:

(function() {  
    var foo = 'bar';  
})();

和此？

(function() {  
    var foo = 'bar';  
}());

JSLint 告诉我们将调用移动到包含函数的括号中，但我看不需要。

JSLint tells us to Move the invocation into the parens that contain the function, but I see no need to.

修改：答案太酷了。 〜function ， JSHint 替代方法以及jQuery对（/ *** /）（）; 和Crockford的解释！我想我会得到一个他们是同样的事情的答案。

你们通过upvote决定最好的一个，然后点击它。

The answers are too cool. ~function, the JSHint alternative along with jQuery's preference for (/***/)(); and Crockford's explanation! I thought I was going to just get a "they're the same thing" kind of answer.
You guys decide the best one through upvotes and I tick it.

推荐答案

没有区别。两种方法都是使JavaScript解析器将您的函数作为表达式而不是声明处理的有效方式。

There's no difference. Both are valid ways to get the JavaScript parser to treat your function as an expression instead of a declaration.

注意， + 和！也可以工作，有时被缩小器用来保存一个大小的字符： p>

Note that + and ! will also work, and are sometimes used by minifiers to save a character of size:

+function() {  
    var foo = 'bar';  
}();

!function() {  
    var foo = 'bar';  
}();

EDIT

As @copy指出，为了完整起见，〜和 - 也可以工作。

As @copy points out, for completeness, ~ and - will also work.

-function() {  
    var foo = 'bar';  
}();

~function() {  
    var foo = 'bar';  
}();

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