for Loop

1. for Loop

for(let i = 1; i <= 5; i++){
    console.log(i);
}

How it works

A for loop has 3 parts:

for(initialization; condition; increment)

In your example:

for(let i = 1; i <= 5; i++)

Iteration-by-Iteration

First iteration

i = 1
1 <= 5  // true

Print:

console.log(1);

Output:

1

Then:

i++;