Question

我有以下匿名职能:

(function() {
 var a = 1;
 var b = 2;

 function f1() {
 }

 function f2() {
 }

 // this => window object!
 // externalFunction(this);
})();

function externalFunction(pointer) {
 // pointer.f1(); => fail!
}

I need to call external function from this anonymous function and pass it s pointer to call functions f1 & f2. But I can t do this, as this refer to window object instead of internal scope.

我可以确定以下职能:

this.f1 = function() {}

但它却带有坏思想,因为它们在全球空间中消失......

我如何通过匿名空间来履行外部职能?

Answer 1

I still wonder why you would make functions to be private, that are needed outside... But there you go:

(function() {
  var a = 1;
  var b = 2;

  var obj = {
    f1: function() {
    },
    f2: function() {
    }
  }

  externalFunction(obj);
})();

function externalFunction(pointer) {
  pointer.f1(); // win
}

或者,你可以单独通过f1和f2,那么你就不需要把他们当作物体。

Answer 2

你可以把范围当作目标,但你可以与你从范围上想要的东西一道制造一个物体:

externalFunction({ f1: f1, f2: f2 });

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