zpad is a tiny Node.js module for zero padding strings and numbers, because I got tired of copypasting a function for this in every other thing I've been writing.
zpad is available via npm:
$ npm install zpadvar zpad = require('zpad');
zpad(5); // -> "05", zpad pads to 2 digits by default
zpad(5, 3); // -> "005", you can pass a second parameter to specify the amount of digits
zpad.amount(3); // change the default padding amount by calling zpad.amount with a number
zpad.amount(); // -> 3, returns the padding amount with no arguments
zpad(5); // -> "005"
zpad.character('X'); // change what is used for padding by calling zpad.character with a string
zpad.character(); // -> "X", returns the padding character with no arguments
zpad(5); // -> "XX5"
zpad(5, 3, 'Z'); // -> "ZZ5", you can also pass custom pad character as third parameter
// .amount and .character can also be chained, allowing you to define them when loading the module
var pad = require('zpad').amount(4).character('Y');
pad(5); // -> "YYY5"No Rights Reserved, zpad has been released under CC0. Feel free to use it in any manner you want.