This is a simplest Scrapy project. current at its 1.05 version.

Inside there is a download middleware working with a selenium grid, which is a web browser programming interface and is very suitable for javascript rendering job for web data grabbing.

In a scrapy Spider , you only need set up a flag of SELENIUM, and optional some action inside the browser, such as click a button, or waiting for some elements inside the webpage. Spiders without the SELENIUM flag, will go the original way.

Also, the selenium grid setting is easy, just follow this instruction.