decimalToCustom, useful to shorten database ID-s into strings

gistfile1.js

function decimalToCustom(decimal, alphabet) {
    var alphabetSize = alphabet.length,
        remainder,
        result = [];
    while (decimal > 0) {
        remainder = decimal % alphabetSize,
        decimal = Math.floor(decimal / alphabetSize);
        result.unshift(alphabet[remainder]);
    }
    return result.join('');
}

var hexes = "0123456789ABCDEF"
console.log(decimalToCustom(153530, hexes));

var letters = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
for (var i = 0; i < 10000; i++) {
    console.log(decimalToCustom(i, letters));
}