Frame.evaluate() method

Signature:

evaluate<ReturnType extends any>(pageFunction: Function | string, ...args: unknown[]): Promise<ReturnType>;

Parameters

Parameter	Type	Description
pageFunction	Function \| string	a function that is run within the frame
args	unknown[]	arguments to be passed to the pageFunction

Returns:

Promise<ReturnType>

This method behaves identically to Page.evaluate() except it's run within the context of the frame, rather than the entire page.