Show a leading zero if a number is less than 10
digits, javascript, math, numbers
Solution
There's no built-in JavaScript function to do this, but you can write your own fairly easily:
function pad(n) {
return (n < 10) ? ("0" + n) : n;
}
EDIT:
Meanwhile there is a native JS function that does that. See String#padStart
console.log(String(5).padStart(2, '0'));
Problem
Possible Duplicate: JavaScript equivalent to printf/string.format How can I create a Zerofilled value using JavaScript? I have a number in a variable: ``` var number = 5; ``` I need that number to be output as 05: ``` alert(number); // I want the alert to display 05, rather than 5. ``` How can I do this? I could manually check the number and add a 0 to it as a string, but I was hoping there's a JS function that would do it?