006086bc83
Co-authored-by: release-please[bot] <55107282+release-please[bot]@users.noreply.github.com>
35 lines
1.3 KiB
Markdown
35 lines
1.3 KiB
Markdown
---
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sidebar_label: WebWorker.evaluateHandle
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---
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# WebWorker.evaluateHandle() method
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The only difference between `worker.evaluate` and `worker.evaluateHandle` is that `worker.evaluateHandle` returns in-page object (JSHandle). If the function passed to the `worker.evaluateHandle` returns a `Promise`, then `worker.evaluateHandle` would wait for the promise to resolve and return its value. Shortcut for `await worker.executionContext()).evaluateHandle(pageFunction, ...args)`
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#### Signature:
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```typescript
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class WebWorker {
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evaluateHandle<
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Params extends unknown[],
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Func extends EvaluateFunc<Params> = EvaluateFunc<Params>
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>(
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pageFunction: Func | string,
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...args: Params
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): Promise<HandleFor<Awaited<ReturnType<Func>>>>;
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}
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```
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## Parameters
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| Parameter | Type | Description |
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| ------------ | -------------- | ----------------------------------------------- |
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| pageFunction | Func \| string | Function to be evaluated in the page context. |
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| args | Params | Arguments to pass to <code>pageFunction</code>. |
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**Returns:**
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Promise<[HandleFor](./puppeteer.handlefor.md)<Awaited<ReturnType<Func>>>>
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Promise which resolves to the return value of `pageFunction`.
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