Can someone explain how window.reset works in Java script.

I have a quiz with 5 part quizees. All of the part quizzes is built in 1 html page. So when you push NEXT Button the wrapper change Nd show the next quiz with the help of classList.add/remove(hide) where hide is display:none in CSS.

Now I want to use window.reset() in the console to reset a quiz at anytime. So for exemple, if I'am in the middle of quiz 4 I want to be able to write window.reset() in the console and the 4th quiz starts again and reset the points.

But I dont understand how I go about it. Every test is in its own module. Cant show any code cause its so complex and alot of code.

Hope someone can give me a good advice, even though its a very complex question