IIFE和电话之间的区别 [英] Difference between IIFE and call

问题描述

之间是否存在差异：

(function(){

}).call(this);

和

(function(){

})();

或

var MODULE = {};
(function(){
    this.hello = 'world'
}).call(MODULE);

和

var MODULE = {};
(function(m){
    m.hello = 'world'
})(MODULE);

我经常在编译的javascript中看到第一个案例。他们都会创建一个范围，并做好他们的命名工作。

I often see the first case in compiled javascript. They both would create a scope and do their namespacing job well.

是否存在任何差异，或仅仅是品味问题。

Is there any difference or is it just a matter of taste.

编辑：为什么编译的javascript会使用IIFE调用？

And why would compiled javascript would use call over IIFE?

推荐答案

(function(){

}).call(this);

调用匿名函数，其中此里面调用时，该函数将指向此引用的对象。

calls the anonymous function where the this inside the function will point to the object referred by this when the call was made.

(function(){

})();

调用匿名函数，其中此里面该函数将指向全局对象（或在严格模式下未定义）

calls the anonymous function where the this inside the function will point to the global object (or undefined in strict mode)

演示：小提琴

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