傻瓜的吸气器/安装器 [英] Getters \ setters for dummies

问题描述

我一直在努力使自己了解getter和setters，而不会陷入其中.我阅读了 JavaScript Getter和Setters 和定义Getter和Setters 却没有得到它.

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.

有人可以清楚地声明:

1. getter和setter的用途，以及
2. 举一些非常简单的例子吗?

推荐答案

除了

In addition to @millimoose'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，并且first和last将被更新，反之亦然.

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

n = new Name('Claude', 'Monet')
n.first # "Claude"
n.last # "Monet"
n.fullName # "Claude Monet"
n.fullName = "Gustav Klimt"
n.first # "Gustav"
n.last # "Klimt"

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