puppeteer/new-docs/puppeteer.frame._eval.md
Jack Franklin 6474edb9ba
feat(types): add types for $eval (#6135)
This pulls in the types (based on the DefinitelyTyped repo) for
`page.$eval` (and the `$eval` method on other classes). The `$eval`
method is quite hard to type due to the way we wrap and unwrap
ElementHandles that are passed to / returned from the `pageFunction`
that users provide.

Longer term we can improve the types by providing type overloads as
DefinitelyTyped does but I've deferred that for now (see the `TODO` in
the code for more details).
2020-07-02 10:09:34 +01:00

913 B

Home > puppeteer > Frame > $eval

Frame.$eval() method

Signature:

$eval<ReturnType>(selector: string, pageFunction: (element: Element, ...args: unknown[]) => ReturnType | Promise<ReturnType>, ...args: SerializableOrJSHandle[]): Promise<WrapElementHandle<ReturnType>>;

Parameters

Parameter Type Description
selector string
pageFunction (element: Element, ...args: unknown[]) => ReturnType | Promise<ReturnType>
args SerializableOrJSHandle[]

Returns:

Promise<WrapElementHandle<ReturnType>>