Can tell me hiw does it work??

Question

function del(){
var num = document.getElementById("input").value, str = "";
var arr = num.split("");
for(var i=0; i<arr.length-1; i++) {
str += arr[i];
}
document.getElementById("input").value = str;
}

and plz give an example with " for"

Answer 1

https://code.sololearn.com/WK19AC3HitW9/?ref=app

Answer 2

i is a variable. each run of the for loop, i is whatever number the loop is currently on. so the first time the loop runs, i=0 .. the second time the loop runs, i=1, and so on until i meets the condition that tells it to stop. in this case, it runs as long as i<arr.length

Answer 3

check the code again, I added more to it

Answer 4

Thanks

Answer 5

you loop and

str= arr[i]

makes str whatever the new loop says. what you want instead is

str= str+arr[i]

This way it adds the new piece to str instead of making str the new thing

Answer 6

When it add's a one to i so what does i do??

Answer 7

Can you make it with web plz

Answer 8

Thanks

Answer 9

Ok underestood

Answer 10

Thank you so much

Answer 11

Ok

Answer 12

I tried my code it delet's s.th just I don't underestand in that code Wrote's "i++" but it delet's one character