JavaScript Hexidecimal Colours

hex.js

/**
 * Converts a hex color string to an array of 3 ints
 */
function hex2RGB(h) {
    h = h.replace('#', '');
    h = h.length == 3 ? shortHexToLong(h) : h;
    if (h) {
        var m = h.match(/([0-9a-f]{2})([0-9a-f]{2})([0-9a-f]{2})/);
        if (m) {
            var rgb = [];
            for (var i = 1; i < m.length; i++) {
                rgb.push(hex2Dec(m[i]));
            }
            return rgb;
        } else {
            return null;
        }
    } else {
        return null;
    }
}

/**
 * Converts a shorthand hex to long. E.g. 'f00' = 'ff0000'
 */
function shortHexToLong(h) {
    if (h.length == 3) {
        j = '';
        for (var i in h) {
            j += h[i] + h[i];
        }
        return j;
    } else {
        return null;
    }
}

/**
 * Converts a decimal int to a hex string
 */
function dec2Hex(d) {
    return d.toString(16);
}

/**
 * Converts a hex string to a decimal int
 */
function hex2Dec(h) {
    return parseInt(h,16);
}