Changing the interval of SetInterval while it's running

Question

I have written a javascript function that uses setInterval to manipulate a string every tenth of a second for a certain number of iterations.

function timer(         


        

Answer 1

Simple answer is you can't update an interval of already created timer. (There is only two functions setInterval/setTimer and clearInterval/clearTimer, so having a timerId you can only deactivate it.) But you can made some workarounds. Take a look at this github repo.