非标准
该特性是非标准的，请尽量不要在生产环境中使用它！

Array.unobserve()方法用来移除 `Array.observe()`设置的所有观察者。

## 语法

    Array.unobserve(arr, callback)

### 参数

`arr`
  停止观察的数组。
`callback回调`
  需要停止的array arr每次改变都会调用的函数引用。

## 描述

`Array.unobserve()` 方法因为要移除观察者，所以应该在`Array.observe()`调用后调用。

回调函数应该是一个函数的引用并且不能是匿名函数， 因为这个函数需要用来移除前面的观察者， 如果用匿名函数是没有用的，将不能移除任何观察者。

## 例子

### 停止观察一个数组

    var arr = [1, 2, 3];

    var observer = function(changes) {
      console.log(changes);
    }

    Array.observe(arr, observer);
    ​
    arr.push(4);
    // [{type: "splice", object: <arr>, index: 3, removed:[], addedCount: 1}]

    Array.unobserve(arr, observer);

    arr.pop();
    // The callback wasn't called

### 使用匿名函数

    var persons = ['Khalid', 'Ahmed', 'Mohammed'];

    Array.observe(persons, function (changes) {
      console.log(changes);
    });

    persons.shift();
    // [{type: "splice", object: <arr>, index: 0, removed: [ "Khalid" ], addedCount: 0 }]

    Array.unobserve(persons, function (changes) {
      console.log(changes);
    });

    persons.push('Abdullah');
    // [{type: "splice", object: <arr>, index: 2, removed: [], addedCount: 1 }]
    // The callback will always be called

## 浏览器兼容性

The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.

Update compatibility data on GitHub

| Desktop | Mobile | Server
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | Android webview | Chrome for Android | Edge Mobile | Firefox for Android | Opera for Android | Safari on iOS | Samsung Internet | Node.js
`unobserve` Deprecated Non-standard | Chrome No support 36 — 52 | Edge No support No | Firefox No support No | IE No support No | Opera No support No | Safari No support No | WebView Android No support No | Chrome Android No support No | Edge Mobile No support No | Firefox Android No support No | Opera Android No support No | Safari iOS No support No | Samsung Internet Android No support No | nodejs No support No

### Legend

No support
  No support
Non-standard. Expect poor cross-browser support.
  Non-standard. Expect poor cross-browser support.
Deprecated. Not for use in new websites.
  Deprecated. Not for use in new websites.

## 相关内容

- `Array.observe()`
- `Object.observe()`
- `Object.unobserve()`