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58 lines
1.4 KiB
Markdown
58 lines
1.4 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.querySelectorAll` 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 string,
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Params extends unknown[],
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Func extends EvaluateFunc<
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[Array<NodeFor<Selector>>, ...Params]
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> = EvaluateFunc<[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 | |
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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 1
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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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## Example 2
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```ts
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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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