How can I format an integer to a specific length in javascript?

Question

I have a number in Javascript, that I know is less than 10000 and also non-negative. I want to display it as a four-digit number, with leading zeroes. Is there anything more e

Answer 1

You could go crazy with methods like these:

function PadDigits(input, totalDigits) 
{ 
    var result = input;
    if (totalDigits > input.length) 
    { 
        for (i=0; i < (totalDigits - input.length); i++) 
        { 
            result = '0' + result; 
        } 
    } 
    return result;
} 

But it won't make life easier. C# has a method like PadLeft and PadRight in the String class, unfortunately Javascript doesn't have this functionality build-in