A for loop lets us create the counter variable inside the parentheses, like let counter = 1;.
for (let counter = 1;) {}
After the semicolon, we place a condition like i < 5 and add another semicolon ;.
for (let i = 1; i < 5;) {}
Last, we increment the counter variable with i++.
for (let i = 1; i < 5; i++) {
console.log(i);
}