If you have a single-digit number, and you need to format it to always have at-least two digits, then you can use the below function to solve your problem:
function toAtleastTwoPlaces(n){
return n > 9 ? "" + n: "0" + n;
}
When testing the above method, you could do the following:
toAtleastTwoPlaces(9); //Returns "09"
toAtleastTwoPlaces(10); //Returns "10"
toAtleastTwoPlaces(999); //Returns "999"
This is especially useful where you need to format dates:
// INPUT: yyyy-m-d
// OUTPUT: yyyy-mm-dd
var date = obj.year + "-" + toAtleastTwoPlaces(obj.month) + "-" + toA
tleastTwoPlaces(obj.day);
