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

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

Just change var to let