16进制转rgba

• 方法

function toRgba(color, opacity) {
    return (
        "rgba(" +
        parseInt(color.substring(1, 3), 16) +
        "," +
        parseInt(color.substring(3, 5), 16) +
        "," +
        parseInt(color.substring(5, 7), 16) +
        "," +
        opacity +
        ")"
    );
}

• 使用

const color = toRgba('#ff0000', .1); // rgba(255,0,0,0.1)

.test {
    color: v-bind(color);
}