Incrementing numbers starting from 0000

Question

I have a starting number to work from which is 0000 and increment it by one, i have that done, but the result is 1,2,3 instead of 0001,0002,0003 etc. How can I achieve this?

Thank you

Answer 1

for (let i = 0; i <= 9; i++) {
      for (let j = 0; j <= 9; j++) {
         for (let k = 0; k <= 9; k++) {
          for (let l = 0; l <= 9; l++) {

           let yournumber = i.toString() + j.toString() + k.toString() + l.toString();
            console.log(yournumber);

          }
       }
   }
}