Vue

新建文件夹store，store下:

action.js

const actions = {}
export default actions;

getter.js

const getters = {}
export default getters;

mutation-types.js

export const publicSetEvent = 'publicSetEvent';

mutations.js

import {publicSetEvent} from './mutation-types';

const mutations = {
    [publicSetEvent]: (state, json) => {
　　　　// 初始化默认，避免跳转路由时的公用部分显示的相互影响
       state.publicSet = {headTitle: true,headNav: false,sTitle: '头部标题'}

// 是否显示头部title
        state.publicSet.headTitle = json.headTitle || state.publicSet.headTitle;
        // 是否显示头部tabbar切换
        state.publicSet.headNav = json.headNav || state.publicSet.headNav;
        // 头部显示的标题文字
        state.publicSet.sTitle = json.sTitle || state.publicSet.sTitle;
        // tabbar的标题文字及待办badge数字
        state.publicSet.navList = json.navList || state.publicSet.navList;
    }
}

export default mutations;

index.js

import Vue from 'vue'
import Vuex from 'vuex'
import mutations from './mutations';
import getters from './getters';
import actions from './actions';

Vue.use(Vuex);

const state = {
    publicSet: {//设置公共头
        headTitle: true,
        headNav: false,
        sTitle: '头部标题'
    }
}

const store = new Vuex.Store({
    state,
    getters,
    mutations,
    actions
});

export default store;

头部公共组件components文件夹下

v-header.vue

<template>
  <div class="v-header">
    <vTitle v-if="publicSet.headTitle" :stitle="publicSet.sTitle"></vTitle>
  </div>
</template>

<script>
import vTitle from './v-title';
import {mapState} from 'vuex';
export default{
   name:'v-header',
   components:{vTitle},
   data(){
    return{
      
    }
   },
   computed: {
       ...mapState(['publicSet'])
   }
}
</script>

 

v-title.vue

<template>
  <div class="v-title">
      <XHeader :left-options="{backText:''}" :title="stitle"></XHeader>
  </div>
</template>

<script>
import { XHeader } from 'vux'
export default{
  name:'v-title',
  props:['stitle'],
  components:{XHeader},
  data (){
      return {
      }
  },
  methods: {
  }
}

</script>

<style lang="less">
</style>

 

App.vue

<template>
  <div id="app">
    <vHeader></vHeader>
    <router-view/>
  </div>
</template>

<script>
import vHeader from '@/components/header/v-header'
export default {
  name: 'app',
  components:{vHeader}
}
</script>

main.js

import Vue from 'vue'
import App from './App'
import router from './router'
import Vuex from 'vuex'
import store from './store'
Vue.use(Vuex)

Vue.config.productionTip = false

new Vue({
  el: '#app',
  router,
  store,
  components: { App },
  template: '<App/>'
})

页面调用index.vue

<template>
    <div class="index">
    </div>
</template>

<script>
export default{
    name:'index',
    data(){
        return{

        }
    },
    created(){
    },
    beforeRouteEnter(to,from,next){
        let option={
          headTitle:true,
　　　　　　sTitle:'我是新标题'
        }
        console.log(option);
        next(vm=>{
          vm.$store.commit('publicSetEvent',option);
        })
    },
    methods:{

    }
    
}
</script>

<style lang="less">
</style>

运行进去index页面就可以看到公共头了