DataView.prototype.buffer

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.

buffer 属性描述了在构造时被 DataView 引用的 ArrayBuffer

尝试一下

// Create an ArrayBuffer
const buffer = new ArrayBuffer(123);

// Create a view
const view = new DataView(buffer);

console.log(view.buffer.byteLength);
// Expected output: 123

语法

dataview.buffer

描述

buffer 属性是一个访问器 (accessor) 属性,它的 set 属性为 undefined,这意味着它是只读的。值在 DataView 被创建时就确定了,且不能改变。

示例

使用 buffer 属性

js
var buffer = new ArrayBuffer(8);
var dataview = new DataView(buffer);
dataview.buffer; // ArrayBuffer { byteLength: 8 }

规范

Specification
ECMAScript® 2025 Language Specification
# sec-get-dataview.prototype.buffer

浏览器兼容性

Report problems with this compatibility data on GitHub
desktopmobileserver
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
Deno
Node.js
buffer

Legend

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Full support
Full support

参见