JS private 如何使用

推荐关注

› Meteor

› JSLint - a JavaScript code quality tool

› jsFiddle

› D3.js

› WebStorm

推荐书目

› JavaScript 权威指南第 5 版

› Closure: The Definitive Guide

This topic created in 3754 days ago, the information mentioned may be changed or developed.

最近看了道爷的 2001 文章
http://www.crockford.com/javascript/private.html
在自己的机器上跑，并没有 private 的效果啊。
```javascript
function Container(param) {
this.member = param;
var secret = 3;
var that = this;
}
var myContainer = new Container('abc');
console.log(myContainer.member); // 依然会打印 abc
myContainer.member = 'efg';
console.log(myContainer.member); // 会打印 efg
```
求解。多谢！

9 replies • 2016-02-28 17:36:07 +08:00

Septembers

Feb 27, 2016 via Android

see https://www.web-tinker.com/article/20833.html
see https://www.web-tinker.com/article/20742.html
see https://mdn.io/Symbol
see https://mdn.io/getOwnPropertySymbols
see https://mdn.io/WeakMap

Septembers

Feb 27, 2016 via Android

您认真看您发的文章了吗？ secret 才是私有的啊

kaiwei

Feb 27, 2016

@Septembers 在 Private 那个标题下面：
This constructor makes three private instance variables: param, secret, and that. They are attached to the object, but they are not accessible to the outside, nor are they accessible to the object's own public methods. They are accessible to private methods. Private methods are inner functions of the constructor.
他说，三个都是不能 accessible to the outside 。