Frame | /mod.ts | puppeteer@16.2.0

method Frame.prototype.$eval

Re-export

import { Frame } 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 frame.

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

Examples

Example 1

const searchValue = await frame.$eval('#search', el => el.value);

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 the frame's context. The first element matching the selector will be passed to the function as its first argument.

...args: Params

Additional arguments to pass to pageFunction.

Returns

Promise<Awaited<ReturnType<Func>>>

A promise to the result of the function.