Convert Hex to RGBA

//If you write your own code, remember hex color shortcuts (eg., #fff, #000)function hexToRgbA(hex){    var c;    if(/^#([A-Fa-f0-9]{3}){1,2}$/.test(hex)){        c= hex.substring(1).split('');        if(c.length== 3){            c= [c[0], c[0], c[1], c[1], c[2], c[2]];        }        c= '0x'+c.join('');        return 'rgba('+[(c>>16)&255, (c>>8)&255, c&255].join(',')+',1)';    }    throw new Error('Bad Hex');}hexToRgbA('#fbafff')/*  returned value: (String)rgba(251,175,255,1)*/

@ElDoRado1239 has the right idea, but there's also a cleaner way:

function hexToRGB(hex, alpha) {    var r = parseInt(hex.slice(1, 3), 16),        g = parseInt(hex.slice(3, 5), 16),        b = parseInt(hex.slice(5, 7), 16);    if (alpha) {        return "rgba(" + r + ", " + g + ", " + b + ", " + alpha + ")";    } else {        return "rgb(" + r + ", " + g + ", " + b + ")";    }}hexToRGB('#FF0000', 0.5);