css 命名：BEM, scoped css, css modules 与 css-in-js详解

<style scoped>
.example {
  color: red;
}
</style>
 
<template>
  <div class="example">hi</div>
</template>

<style>
.example[data-v-f3f3eg9] {
  color: red;
}
</style>
 
<template>
  <div class="example" data-v-f3f3eg9>hi</div>
</template>

<style module>
.red {
  color: red;
}
</style>
<template>
  <p :class="$style.red">
    This should be red
  </p>
</template>

<style module>
._1yZGjg0pYkMbaHPr4wT6P__1 {
  color: red;
}
</style>
<template>
  <p class="_1yZGjg0pYkMbaHPr4wT6P__1">
    This should be red
  </p>
</template>

<template>
  <css-in-js></css-in-js>
</template>
 
<script>
  import styled from 'vue-styled-components';
  export default {
    components: {
      cssInJs: styled.div `
                color: red;
            `
    }
  }
</script>

<template>
    <div class="gXTzCp"></div>
</template>
<style>
.gXTzCp {
    color: red;
}
</style>