How to count numbers

Let's count sum of number from 1 to 10. Now let's declare variable in which we'll store our sum:

let sum = 0;

Then let's have some for loop:

for (let i = 1; i <= 10; i++) {

In loop we have to increment our sum:

    sum += i;

And then when we go out from loop, we can log our sum

console.log("Sum: ");
console.log(sum);