`buffer`访问器属性表示由TypedArray在构造期间引用的`ArrayBuffer`。

## 语法

    typedArray.buffer

## 描述

`buffer` 属性是一个访问器属性，它的 set 访问器函数是`undefined`，意思是你只能够读取这个属性。它的值在TypedArray构造时建立，不能被修改。TypedArray是这里的类型化数组之一。

## 示例

### 使用 `buffer` 属性

    var buffer = new ArrayBuffer(8);
    var uint16 = new Uint16Array(buffer);
    uint16.buffer; // ArrayBuffer { byteLength: 8 }

## 规范

Specification | Status | Comment
--- | --- | ---
ECMAScript 2015 (6th Edition, ECMA-262) TypedArray.prototype.buffer | Standard | 初始定义。
ECMAScript Latest Draft (ECMA-262) TypedArray.prototype.buffer | Draft |

## 浏览器兼容性

We're converting our compatibility data into a machine-readable JSON format. This compatibility table still uses the old format, because we haven't yet converted the data it contains. Find out how you can help!

- Desktop
- Mobile

Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari
--- | --- | --- | --- | --- | ---
Basic support | 7.0 | 4.0 (2) | 10 | 11.6 | 5.1

Feature | Android | Chrome for Android | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile
--- | --- | --- | --- | --- | --- | ---
Basic support | 4.0 | (Yes) | 4.0 (2) | 10 | 11.6 | 4.2

## 另见

- JavaScript 类型化数组
- `TypedArray`