puppeteer/website/versioned_docs/version-9.1.1/puppeteer.elementhandle.__eval.md

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2021-08-10 10:09:48 +00:00
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[Home](./index.md) &gt; [puppeteer](./puppeteer.md) &gt; [ElementHandle](./puppeteer.elementhandle.md) &gt; [$$eval](./puppeteer.elementhandle.__eval.md)
## ElementHandle.$$eval() method
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.
If `pageFunction` returns a Promise, then `frame.$$eval` would wait for the promise to resolve and return its value.
<b>Signature:</b>
```typescript
$$eval<ReturnType>(selector: string, pageFunction: (elements: Element[], ...args: unknown[]) => ReturnType | Promise<ReturnType>, ...args: SerializableOrJSHandle[]): Promise<WrapElementHandle<ReturnType>>;
```
## Parameters
| Parameter | Type | Description |
| --- | --- | --- |
| selector | string | |
| pageFunction | (elements: Element\[\], ...args: unknown\[\]) =&gt; ReturnType \| Promise&lt;ReturnType&gt; | |
| args | [SerializableOrJSHandle](./puppeteer.serializableorjshandle.md)\[\] | |
<b>Returns:</b>
Promise&lt;[WrapElementHandle](./puppeteer.wrapelementhandle.md)&lt;ReturnType&gt;&gt;
## Example 1
```html
<div class="feed">
<div class="tweet">Hello!</div>
<div class="tweet">Hi!</div>
</div>
```
## Example 2
```js
const feedHandle = await page.$('.feed');
expect(await feedHandle.$$eval('.tweet', nodes => nodes.map(n => n.innerText)))
.toEqual(['Hello!', 'Hi!']);
```