vue中没法动态添加::before的style?

Question

vue中没法动态添加::before的style?

Answer 1

换个思维
动态添加class一样能达到效果

.red:before {
    content: 'red',
    background-color  : red
}
.green:before {
    content: 'green';
    background-color: green;
}

切换class red 或者 green