訪問javascript中的兄弟姐妹

Question

我在寫一個節點應用程序，我想獲取調用構造函數的變量的名稱。

a=new constructorFunction(); 
b=new constructorFunction(); 

function constructorFunction(){ 
    this.test="it works!"; 
    this.doSomething=function(){ 
     //this should return the contents of this.test 
    } 
} 

console.log(a.doSomething()); 
console.log(b.doSomething()); 

正如評論所說，我想返回a.test和b.test的值。我怎樣才能做到這一點？

Answer 1

它並不需要成爲任何比這更復雜（fiddle）：

function constructorFunction() { 
    this.test="it works!"; 
    this.doSomething = function() { 
    return this.test; 
    } 
} 

Answer 2

a=new constructorFunction(); 
b=new constructorFunction(); 

function constructorFunction(){ 
    var self = this; 
    this.test="it works!"; 
    this.doSomething=function(){ 
     return self.test; 
    } 
} 

Answer 3

在Chrome工程...（V8所以我假設的node.js的行爲相同）

http://jsfiddle.net/zTTZR/1/

a=new constructorFunction(); 
b=new constructorFunction(); 

function constructorFunction(){ 
    this.test="it works!"; 
    this.doSomething=function(){ 
     return this.test; 
    } 
} 

console.log(a.doSomething());