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JSHandle.evaluate() method

This method passes this handle as the first argument to pageFunction. If pageFunction returns a Promise, then handle.evaluate would wait for the promise to resolve and return its value.

Signature:

evaluate<Params extends unknown[], Func extends EvaluateFunc<[this, ...Params]> = EvaluateFunc<[
        this,
        ...Params
    ]>>(pageFunction: Func | string, ...args: Params): Promise<Awaited<ReturnType<Func>>>;

Parameters​

ParameterTypeDescription
pageFunctionFunc | string
argsParams

Returns:

Promise<Awaited<ReturnType<Func>>>

Example​

const tweetHandle = await page.$('.tweet .retweets');
expect(await tweetHandle.evaluate(node => node.innerText)).toBe('10');