Slide right for nex and left for back with random javascript list!?

Hey!

I guess this is a impossible thing to do because i use the random function with my javascript.
But i have a app with a list javascript-list and when you press the screen a random question shows.

Now i'm wondering if there is a way to go back to the question before with some kind of back button or gesture?
I understand that this maybe wont work since it shows randomely questions.

But i just have to ask =)

Thanks!
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