CountQueuingStrategy：highWaterMark 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 2019年1月.
只读属性 CountQueuingStrategy.highWaterMark 返回在应用背压之前，内置队列可以包含的分块总数。
值
一个整数，表示分块的数量。
示例
js
const queueingStrategy = new CountQueuingStrategy({ highWaterMark: 1 });
const readableStream = new ReadableStream(
{
start(controller) {
// …
},
pull(controller) {
// …
},
cancel(err) {
console.log("stream error:", err);
},
},
queuingStrategy,
);
const size = queuingStrategy.size(chunk);
console.log(`highWaterMark value: ${queuingStrategy.highWaterMark}$`);
规范
| Specification |
|---|
| Streams # ref-for-cqs-high-water-mark① |
浏览器兼容性
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