9 4 1 3 update expression c2 b6 2f 2f loops

1/*The final component in a for loop definition is the update expression, 
2which executes after every iteration of the loop. While this expression
3may be anything, it most often updates the value of the loop variable.
4
5In all of the examples we have seen so far, the update expression has 
6been i++, incrementing the loop variable by 1. However, it can update 
7the loop variable in other ways.*/
8
9
10//This loop prints even integers from 0...50.
11for (let i = 0; i < 51; i = i + 2) {
12   console.log(i);
13}