具名插槽

父组件 : 

<template>
  <nav-bar>
    <template #left>
      <button>{{ leftText }}</button>
    </template>

    <template #center>
      <span>内容</span>
    </template>

    <template v-slot:right>
      <a href="#">登录</a>
    </template>
  </nav-bar>
</template>

<script>
  import NavBar from './NavBar.vue'

  export default {
    components: {
      NavBar
    },
    data() {
      return {
        leftText: "返回"
      }
    }
  }
</script>

<style scoped>
</style>

子组件 : 

<template>
  <div class="nav-bar">
    <div class="left">
      <slot name="left">left</slot>
    </div>
    <div class="center">
      <slot name="center">center</slot>
    </div>
    <div class="right">
      <slot name="right">right</slot>
    </div>
  </div>
</template>