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Worker.postMessage also support passing an options param #29227

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merged 2 commits into from
Sep 21, 2023
Merged

Worker.postMessage also support passing an options param #29227

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Update index.md
skyclouds2001 Sep 21, 2023
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Update files/en-us/web/api/worker/postmessage/index.md
sideshowbarker Sep 21, 2023
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5 changes: 5 additions & 0 deletions files/en-us/web/api/worker/postmessage/index.md
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Expand Up @@ -18,6 +18,7 @@ The `Worker` can send back information to the thread that spawned it using the {

```js-nolint
postMessage(message)
postMessage(message, options)
postMessage(message, transfer)
```

Expand All @@ -29,6 +30,10 @@ postMessage(message, transfer)

If the `message` parameter is _not_ provided, a {{jsxref("SyntaxError")}} will be thrown by the parser. If the data to be passed to the worker is unimportant, `null` or `undefined` can be passed explicitly.

- `options` {{optional_inline}}

- : An optional object containing a `transfer` field with an [array](/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array) of [transferable objects](/en-US/docs/Web/API/Web_Workers_API/Transferable_objects) to transfer ownership of. If the ownership of an object is transferred, it becomes unusable in the context it was sent from, and becomes available only to the worker it was sent to.

- `transfer` {{optional_inline}}

- : An optional [array](/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array) of [transferable objects](/en-US/docs/Web/API/Web_Workers_API/Transferable_objects) to transfer ownership of. If the ownership of an object is transferred, it becomes unusable in the context it was sent from and becomes available only to the worker it was sent to.
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