How to add timer using javascript?

Question

I want to make a 10s timer.I want the code to end if no response is made by the user within 10s.Please help someone.

Answer 1

What you are searching for is a countdown that does something when it runs out. Google is your friend here.
https://www.google.si/search?ie=UTF-8&q=js+countdown
So here's what I managed to put together from what I've found
https://code.sololearn.com/W4t1TxUFOPwQ/?ref=app

Answer 2

Thanks Tim Thuma