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* feat(new-docs): add TSDoc comments to `WebWorker` Co-authored-by: martinsplitt <martin@geekonaut.de>
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Home > puppeteer > 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)](#executioncontextevaluatehandlepagefunction-args).
Signature:
evaluateHandle(pageFunction: Function | string, ...args: any[]): Promise<JSHandle>;
Parameters
| Parameter | Type | Description |
|---|---|---|
| pageFunction | Function | string | Function to be evaluated in the page context. |
| args | any[] | Arguments to pass to pageFunction. |
Returns:
Promise<JSHandle>
Promise which resolves to the return value of pageFunction.