35 lines
1.1 KiB
Markdown
35 lines
1.1 KiB
Markdown
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<!-- Do not edit this file. It is automatically generated by API Documenter. -->
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[Home](./index.md) > [puppeteer](./puppeteer.md) > [JSHandle](./puppeteer.jshandle.md) > [evaluate](./puppeteer.jshandle.evaluate.md)
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## JSHandle.evaluate() method
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This method passes this handle as the first argument to `pageFunction`. If `pageFunction` returns a Promise, then `handle.evaluate` would wait for the promise to resolve and return its value.
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<b>Signature:</b>
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```typescript
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evaluate<T extends EvaluateFn<HandleObjectType>>(pageFunction: T | string, ...args: SerializableOrJSHandle[]): Promise<UnwrapPromiseLike<EvaluateFnReturnType<T>>>;
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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 | T \| string | |
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| args | [SerializableOrJSHandle](./puppeteer.serializableorjshandle.md)\[\] | |
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<b>Returns:</b>
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Promise<[UnwrapPromiseLike](./puppeteer.unwrappromiselike.md)<[EvaluateFnReturnType](./puppeteer.evaluatefnreturntype.md)<T>>>
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## Example
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```js
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const tweetHandle = await page.$('.tweet .retweets');
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expect(await tweetHandle.evaluate(node => node.innerText)).toBe('10');
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```
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