48 lines
1.3 KiB
Markdown
48 lines
1.3 KiB
Markdown
---
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sidebar_label: ElementHandle.$eval
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---
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# ElementHandle.$eval() method
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This method runs `document.querySelector` within the element and passes it as the first argument to `pageFunction`. If there's no element matching `selector`, the method throws an error.
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If `pageFunction` returns a Promise, then `frame.$eval` would wait for the promise to resolve and return its value.
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**Signature:**
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```typescript
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class ElementHandle {
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$eval<
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Selector extends keyof HTMLElementTagNameMap,
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Params extends unknown[],
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Func extends EvaluateFunc<
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[HTMLElementTagNameMap[Selector], ...Params]
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> = EvaluateFunc<[HTMLElementTagNameMap[Selector], ...Params]>
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>(
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selector: Selector,
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pageFunction: Func | string,
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...args: Params
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): Promise<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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| selector | Selector | |
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| pageFunction | Func \| string | |
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| args | Params | |
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**Returns:**
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Promise<Awaited<ReturnType<Func>>>
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## Example
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```ts
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const tweetHandle = await page.$('.tweet');
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expect(await tweetHandle.$eval('.like', node => node.innerText)).toBe('100');
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expect(await tweetHandle.$eval('.retweets', node => node.innerText)).toBe('10');
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```
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