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通过CSS变量修改样式

 5 years ago
source link: https://juejin.im/post/5c3aa7715188252584693163
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问题： js怎么去修改css伪类样式呢？但是js并没有伪类选择器，那么该怎么办呢？网上有不少方法，比如通过切换元素的类、在style中动态插入新的样式等。 那么这里再来一种方法，设置css变量（var），通过js去改变这个变量来实现。 示例： 改变div的ho

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