ElementHandle | /mod.ts | puppeteer@16.2.0

method ElementHandle.prototype.$eval

Re-export

import { ElementHandle } from "https://deno.land/x/puppeteer@16.2.0/mod.ts";

$eval<Selector extends string, Params extends unknown[], Func extends EvaluateFunc<[ElementHandle<NodeFor<Selector>>, ...Params]> = EvaluateFunc<[ElementHandle<NodeFor<Selector>>, ...Params]>>(

selector: Selector,

pageFunction: Func | string,

...args: Params,

): Promise<Awaited<ReturnType<Func>>>

Runs the given function on the first element matching the given selector in the current element.

If the given function returns a promise, then this method will wait till the promise resolves.

Examples

Example 1

const tweetHandle = await page.$('.tweet');
expect(await tweetHandle.$eval('.like', node => node.innerText)).toBe(
  '100'
);
expect(await tweetHandle.$eval('.retweets', node => node.innerText)).toBe(
  '10'
);

Type Parameters

Selector extends string

Params extends unknown[]

optional

Func extends EvaluateFunc<[ElementHandle<NodeFor<Selector>>, ...Params]> = EvaluateFunc<[ElementHandle<NodeFor<Selector>>, ...Params]>

Parameters

selector: Selector

The selector to query for.

pageFunction: Func | string

The function to be evaluated in this element's page's context. The first element matching the selector will be passed in as the first argument.

...args: Params

Additional arguments to pass to pageFunction.

Returns

Promise<Awaited<ReturnType<Func>>>

A promise to the result of the function.