How can i print number in regular interval through setTimeout function?

Question

var i=0;
function counter(){
    for( i;i<100;i++){
        setTimeout(()=>{
            console.log(i);
        },2000)
    }
}

counter();

i wa

Answer 1

How can i print in interval of 2 second?

'Drift' due to CPU time is a consideration.

If your use case is running code spaced 2 seconds apart minimum, use setTimeout():

let ctr = 1

const fn = () => {
  console.log(ctr++)
  setTimeout(fn, 2000) // set the next run
  }

setTimeout(fn, 2000) // set 1st run

If your use case is running code spaced 2 seconds apart maximum, use setInterval():

let ctr = 1

const fn = () => console.log(ctr++)

setInterval(fn, 2000)

More on JS CPU Timer drift here: https://johnresig.com/blog/how-javascript-timers-work/

Cheers,