63 lines
2.0 KiB
Markdown
63 lines
2.0 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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Runs the given function on an array of elements matching the given selector in the current element.
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If the given function returns a promise, then this method will wait till the promise resolves.
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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 string,
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Params extends unknown[],
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Func extends EvaluateFuncWith<
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Array<NodeFor<Selector>>,
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Params
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> = EvaluateFuncWith<Array<NodeFor<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 | The selector to query for. |
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| pageFunction | Func \| string | The function to be evaluated in the element's page's context. An array of elements matching the given selector will be passed to the function as its first argument. |
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| args | Params | Additional arguments to pass to <code>pageFunction</code>. |
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**Returns:**
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Promise<Awaited<ReturnType<Func>>>
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A promise to the result of the function.
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## Example
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HTML:
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```html
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<div class="feed">
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<div class="tweet">Hello!</div>
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<div class="tweet">Hi!</div>
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</div>
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```
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JavaScript:
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```js
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const feedHandle = await page.$('.feed');
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expect(
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await feedHandle.$$eval('.tweet', nodes => nodes.map(n => n.innerText))
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).toEqual(['Hello!', 'Hi!']);
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```
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