Javascript getters和setters for dummies？ [英] Javascript getters and setters for dummies?

问题描述

我一直在努力让我的头脑不停地吸气而且不会沉没。我读过 JavaScript Getters and Setters 和定义Getter和Setter 只是没有得到它。

I've been trying to get my head around getters and setters and its not sinking in. I've read JavaScript Getters and Setters and Defining Getters and Setters and just not getting it.

有人可以明确说明：

1. getter和setter的目的是什么，


2. 给出一些非常简单的例子？

推荐答案

除了 @ Sii的答案，setter也可以用来更新其他值。

In addition to @Sii's answer, setters can also be used to update other values.

function Name(first, last) {
    this.first = first;
    this.last = last;
}

Name.prototype = {
    get fullName() {
        return this.first + " " + this.last;
    },

    set fullName(name) {
        var names = name.split(" ");
        this.first = names[0];
        this.last = names[1];
    }
};

现在，您可以设置 fullName ，以及第一个和最后将会更新，反之亦然。

Now, you can set fullName, and first and last will be updated and vice versa.

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