puppeteer/website/versioned_docs/version-20.2.1/api/puppeteer.webworker.evaluatehandle.md

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WebWorker.evaluateHandle

WebWorker.evaluateHandle() method

The only difference between worker.evaluate and worker.evaluateHandle is that worker.evaluateHandle returns in-page object (JSHandle). If the function passed to the worker.evaluateHandle returns a Promise, then worker.evaluateHandle would wait for the promise to resolve and return its value. Shortcut for await worker.executionContext()).evaluateHandle(pageFunction, ...args)

Signature:

class WebWorker {
  evaluateHandle<
    Params extends unknown[],
    Func extends EvaluateFunc<Params> = EvaluateFunc<Params>
  >(
    pageFunction: Func | string,
    ...args: Params
  ): Promise<HandleFor<Awaited<ReturnType<Func>>>>;
}

Parameters

Parameter	Type	Description
pageFunction	Func | string	Function to be evaluated in the page context.
args	Params	Arguments to pass to pageFunction.

Returns:

Promise<HandleFor<Awaited<ReturnType<Func>>>>

Promise which resolves to the return value of pageFunction.