puppeteer/website/versioned_docs/version-10.0.0/puppeteer.webworker.evaluatehandle.md
TASNEEM KOUSHAR 34ff00e2fe
chore(docs): generate site for v10.0.0
* fix: added parts of website

* fix: removed unnecessary lines

* fix: updated contributing.md

* fix: added parts of sidebar

* fix: added all APIs

* fix: added version 10.0.0

Co-authored-by: Jack Franklin <jacktfranklin@chromium.org>
2021-08-09 09:57:14 +01:00

28 lines
1.3 KiB
Markdown

<!-- Do not edit this file. It is automatically generated by API Documenter. -->
[Home](./index.md) &gt; [puppeteer](./puppeteer.md) &gt; [WebWorker](./puppeteer.webworker.md) &gt; [evaluateHandle](./puppeteer.webworker.evaluatehandle.md)
## WebWorker.evaluateHandle() method
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)`
<b>Signature:</b>
```typescript
evaluateHandle<HandlerType extends JSHandle = JSHandle>(pageFunction: EvaluateHandleFn, ...args: SerializableOrJSHandle[]): Promise<JSHandle>;
```
## Parameters
| Parameter | Type | Description |
| --- | --- | --- |
| pageFunction | [EvaluateHandleFn](./puppeteer.evaluatehandlefn.md) | Function to be evaluated in the page context. |
| args | [SerializableOrJSHandle](./puppeteer.serializableorjshandle.md)\[\] | Arguments to pass to <code>pageFunction</code>. |
<b>Returns:</b>
Promise&lt;[JSHandle](./puppeteer.jshandle.md)&gt;
Promise which resolves to the return value of `pageFunction`.