Is there a JavaScript function that can pad a string to get to a determined length?

Question

I am in need of a JavaScript function which can take a value and pad it to a given length (I need spaces, but anything would do). I found this:

Code:

Answer 1

Using the ECMAScript 6 method String#repeat and Arrow functions, a pad function is as simple as:

var leftPad = (s, c, n) => c.repeat(n - s.length) + s;
leftPad("foo", "0", 5); //returns "00foo"

jsfiddle

edit: suggestion from the comments:

const leftPad = (s, c, n) => n - s.length > 0 ? c.repeat(n - s.length) + s : s;

this way, it wont throw an error when s.lengthis greater than n

edit2: suggestion from the comments:

const leftPad = (s, c, n) =>{ s = s.toString(); c = c.toString(); return s.length > n ? s : c.repeat(n - s.length) + s; }

this way, you can use the function for strings and non-strings alike.