颜色RGB转十六进制

<script>
    function colorRGBtoHex(color) {
        var rgb = color.split(',');
        var r = parseInt(rgb[0].split('(')[1]);
        var g = parseInt(rgb[1]);
        var b = parseInt(rgb[2].split(')')[0]);
        var hex = "#" + ((1 << 24) + (r << 16) + (g << 8) + b).toString(16).slice(1);
        return hex;
    }
    console.log(colorRGBtoHex("0,0,0,0"))
</script>