的Javascript委託

Question

我有代碼

function createDelegate(object, method) 
{ 
    var shim = function() 
    {     
     method.apply(object, arguments); 
    } 
    return shim; 
} 


this.test = 3; 
var pAction = {to: this.test} 
this.tmp = createDelegate(this, function() 
{ 
       print("in: " + pAction.to); 
       return pAction.to; 
}); 
print("out: " + this.tmp()); 

但由於某些原因，我得到以下結果

​​

任何人都知道這樣做的原因如下？

Answer 1

當您創建委派的功能，您必須返回舊函數的結果：

function createDelegate(object, method) 
{ 
var shim = function() 
{     
    return method.apply(object, arguments); 
} 
return shim; 
}