vue非父子传值 home组件传给News组件

非父子组件传值

1、新建一个js文件（vueEvent.js）引入vue 实例化vue 最后暴露这个实例
2、在要广播的地方引入刚才定义的实例
3、通过 VueEvent.$emit('名称',‘数据’);
4、在接受数据的地方通过$on 接受广播的数据

     VueEvent.$on('名称',(data)=>{
     console.log(data)
     })

非父子传值 home组件传给News组件

App.vue

<template>
  <div id="app">
      <router-link to="/">Home</router-link>
      <v-news></v-news>
    <router-view />
  </div>
</template>

<script>
import news from "./components/News";
import { log } from "util";
export default {
  components: {
    "v-news": news //导入news组件
  }
};
</script>
<style>
</style>

vueEvent.js

import Vue from 'vue';
var VueEvent = new Vue();
export default VueEvent;

Home.vue

<template>
  <div class="home">
    <div>home组件</div>
    <button @click="emitHome">给News组件广播数据</button>
    <div>{{homeMsg}}</div>
  </div>
</template>
<script>
import VueEvent from "../model/vueEvent";
export default {
  name: "home",
  data() {
    return {
      msg: "我是home的msg",
    };
  },
  mounted() {
    VueEvent.$on("to-home", data => {
      this.homeMsg = data;//在news里面 已经把数据给到 to-home ，得到数据后赋值给homeMsg
    });
  },
  methods: {
    emitHome() {
      VueEvent.$emit("to-news", this.msg); //把home组件的msg传给news.vue
    }
  }
};
</script>

News.vue

<template>
  <div id="news">
    <div>我是新闻组件</div>
    <div>{{newss}}</div>
    <button @click="emitNews()">给home组件广播数据</button>
  </div>
</template>

<script>
import VueEvent from "../model/vueEvent";
export default {
  data() {
    return {
      msg: "我是一个home组件",
      newss: ""
    };
  },
  mounted() {
    VueEvent.$on("to-news", data => {
      this.newss = data;
    });
  },
  methods: {
    emitNews() {
      VueEvent.$emit("to-home", this.msg);//把数据给到to-home 里面 
    }
  }
};
</script>

<style lang="scss" scoped>
</style>

来源：https://www.cnblogs.com/divtab/p/11497984.html

标签

vue

data

news