puppeteer/new-docs/puppeteer.framewaitforfunctionoptions.polling.md

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FrameWaitForFunctionOptions.polling property

An interval at which the pageFunction is executed, defaults to raf. If polling is a number, then it is treated as an interval in milliseconds at which the function would be executed. If polling is a string, then it can be one of the following values:

• raf - to constantly execute pageFunction in requestAnimationFrame callback. This is the tightest polling mode which is suitable to observe styling changes.

• mutation - to execute pageFunction on every DOM mutation.

Signature:

polling?: string | number;