如何访问函数/类属性javascript

本文介绍了如何访问函数/类属性javascript的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

在下面的代码中，我在弄清楚如何记录(在控制台中)Penguin的name和numLegs属性(即"emperor"和2)，而没有更改函数的内部?

In the following code, I am having trouble figuring out how to log (in the console) the name and numLegs properties of Penguin (i.e., "emperor" and 2), without changing the inside of the function?

function Penguin(name) {
    this.name = name;
    this.numLegs = 2;
}

var emperor = new Penguin("emperor");

我该怎么办?

推荐答案

只需访问它的属性.皇帝是一个对象，这意味着您可以使用.语法访问属性.

Simply accessing it's properties. Your emperor is an object, which means that you can access properties with . syntax.

function Penguin(name){

   this.name=name;

   this.numLegs=2;

}

var emperor = new Penguin("emperor");

console.log(emperor.name);
console.log(emperor.numLegs);

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