ByteLengthQueuingStrategy.size()

ByteLengthQueuingStrategy 接口的 size() 方法返回给定分块的 byteLength 属性。

语法

js
size(chunk)

参数

chunk

一个通过流传递的数据分块。

返回值

一个整数,表示给定分块的字节长度。

示例

js
const queuingStrategy = new ByteLengthQueuingStrategy({ highWaterMark: 1 });

const readableStream = new ReadableStream(
  {
    start(controller) {
      // …
    },
    pull(controller) {
      // …
    },
    cancel(err) {
      console.log("stream error:", err);
    },
  },
  queuingStrategy,
);

const size = queueingStrategy.size(chunk);

规范

Specification
Streams
# blqs-size

浏览器兼容性

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Deno
Node.js
size

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Full support
Full support

参见