ElementHandle.$$eval() method
Runs the given function on an array of elements matching the given selector in the current element.
If the given function returns a promise, then this method will wait till the promise resolves.
Signature
class ElementHandle {
$$eval<
Selector extends string,
Params extends unknown[],
Func extends EvaluateFuncWith<
Array<NodeFor<Selector>>,
Params
> = EvaluateFuncWith<Array<NodeFor<Selector>>, Params>,
>(
selector: Selector,
pageFunction: Func | string,
...args: Params
): Promise<Awaited<ReturnType<Func>>>;
}
Parameters
Parameter | Type | Description |
---|---|---|
selector | Selector | selector to query the page for. CSS selectors can be passed as-is and a Puppeteer-specific selector syntax allows quering by text, a11y role and name, and xpath and combining these queries across shadow roots. Alternatively, you can specify the selector type using a prefix. |
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. |
args | Params | Additional arguments to pass to |
Returns:
Promise<Awaited<ReturnType<Func>>>
A promise to the result of the function.
Example
HTML:
<div class="feed">
<div class="tweet">Hello!</div>
<div class="tweet">Hi!</div>
</div>
JavaScript:
const feedHandle = await page.$('.feed');
expect(
await feedHandle.$$eval('.tweet', nodes => nodes.map(n => n.innerText))
).toEqual(['Hello!', 'Hi!']);