Formation of string through loops in JavaScript

Loops can create strings. For example, let's make a string filled with ten letters 'x':

javascriptlet str = '';

for (let i = 0; i < 10; i++) {
  str += 'x';
}

console.log(str); // shows 'xxxxxxxxxx'

And now let's make the string '12345'. To do this, we will add a loop counter to our variable:

javascriptlet str = '';

for (let i = 1; i <= 5; i++) {
  str += i;
}

console.log(str); // shows '12345'