Question

我正在编写节点应用程序，我想获取调用构造函数的变量的名称。

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());

正如评论所说，我想返回a.test和b.test的值。我怎么能做到这一点？

Answer 1

它不需要比这更复杂（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中这可行...（V8所以我假设node.js的行为相同）

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());

在javascript中访问兄弟姐妹

3 个答案: