WebSocket:binaryType 属性

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.

备注: 此特性在 Web Worker 中可用。

WebSocket.binaryType 属性用于控制通过 WebSocket 连接接收的二进制数据类型。

一个字符串:

"blob"

使用 Blob 对象处理二进制数据。这是默认值。

"arraybuffer"

使用 ArrayBuffer 对象处理二进制数据。

示例

js
// 创建 WebSocket 连接。
const socket = new WebSocket("ws://localhost:8080");

// 将二进制类型从“blob”更改为“arraybuffer”
socket.binaryType = "arraybuffer";

// 监听消息
socket.addEventListener("message", (event) => {
  if (event.data instanceof ArrayBuffer) {
    // 二进制帧
    const view = new DataView(event.data);
    console.log(view.getInt32(0));
  } else {
    // 文本帧
    console.log(event.data);
  }
});

规范

Specification
WebSockets
# ref-for-dom-websocket-binarytype①

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
binaryType

Legend

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Full support
Full support