Draft
This page is not complete.
This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The CountQueuingStrategy()
constructor creates and returns a CountQueuingStrategy
object instance.
Syntax
var countQueuingStrategy = new CountQueuingStrategy({highWaterMark});
Parameters
- {highWaterMark}
- An object containing a
highWaterMark
property. This is a non-negative integer defining the total number of chunks that can be contained in the internal queue before backpressure is applied.
Return value
An instance of the CountQueuingStrategy
object.
Exceptions
None.
Examples
const queuingStrategy = new CountQueuingStrategy({ highWaterMark: 1 });
const writableStream = new WritableStream({
// Implement the sink
write(chunk) {
...
},
close() {
...
},
abort(err) {
console.log("Sink error:", err);
}
}, queuingStrategy);
var size = queuingStrategy.size()
;
Specifications
Specification | Status | Comment |
---|---|---|
Streams The definition of 'CountQueuingStrategy()' in that specification. |
Living Standard | Initial definition. |
Browser compatibility
The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
CountQueuingStrategy() constructor | Chrome Full support 59 | Edge Full support 16 | Firefox
Full support
57
| IE No support No | Opera Full support 46 | Safari ? | WebView Android Full support 59 | Chrome Android Full support 59 | Firefox Android
Full support
57
| Opera Android Full support 43 | Safari iOS ? | Samsung Internet Android Full support 7.0 |
Legend
- Full support
- Full support
- No support
- No support
- Compatibility unknown
- Compatibility unknown
- Experimental. Expect behavior to change in the future.
- Experimental. Expect behavior to change in the future.
- User must explicitly enable this feature.
- User must explicitly enable this feature.