loops.js

let a = 10; // save 10 inside varialbe 'a'
let x = 0; // // save 0 inside varialbe 'x'

while(x < a) { // condition is - as long as value of 'x' is less than value of 'a', we will run the following code
  console.log( x ); // print current value of 'x' to the console
  x = x + 1 // then, add 1 to current value of 'x'
}

/*
  That loop will run 11 times and print - 
  0
  1
  2
  3
  4
  5
  6
  7
  8
  9
  10
*/