vux学习

<template>
  <div>
        <x-header :left-options="{showBack: true,backText:\'text\'}">do notBack</x-header>
  </div>
</template>

<script>
  import {XHeader, Actionsheet} from \'vux\'
  export default {
    components: {
      XHeader,
      Actionsheet
    },
    data () {
      return {
        menus: {
          menu1: \'Take Photo\',
          menu2: \'Choose from photos\'
        },
        showMenus: false
      }
    }
  }
</script>

 :left-options="{showBack: true,backText:\'text\'}"
当showBack存在的时候第二个参数才生效，不能只写第二个参数