Answers for "handling leading zeros in javascript"

add leading zeros to number javascript

const number = 5;
console.log(number.toString().padStart(2, '0')); // expected output: "05"

javascript print int with leading zeros

function padLeadingZeros(num, size) {
    var s = num+"";
    while (s.length < size) s = "0" + s;
    return s;
}
padLeadingZeros(57, 3);// "057"
padLeadingZeros(57, 4); //"0057"