- 在Vue中經常會遇到一些比較複雜的業務場景,需要組件之間隔代通信或者是兄弟組件之間相互通信,這種情況下,我們一般選用EventBus方式解決組件間的通信問題,具體實現如下:
// utils/EventBus.js
import Vue from 'vue';
// 直接導出一個Vue實例,使用Vue示例的$emit、$on、$once、$off的功能進行組件間的通信,由於所有的組件都引入同一實例,故相互間的通信是可以被彼此捕獲的
export default new Vue();
// main.js
import Vue from "vue";
import App from "./App.vue";
import bus from "./utils/EventBus";
Vue.prototype.$bus = bus;
new Vue({
render: h => h(App)
}).$mount("#app");
// a.vue
<template>
<div class="container">
</div>
</template>
<script>
export default {
name: "test",
data(){
return {
userInfo:{}
}
},
created(){
this.$bus.$emit("aCreated",{message: "A had been created"});
this.$bus.$on("bReceived",({message})=>{
console.log("B had been received message from A,the message content is "+message);
});
}
}
</script>
<style scoped>
</style>
//b.vue
<template>
<div class="container">
</div>
</template>
<script>
export default {
name: "test",
data(){
return {
userInfo:{}
}
},
created(){
this.$bus.$emit("bCreated",{message: "B had been created"});
this.$bus.$on("aCreated",({message})=>{
this.$bus.$emit("bReceived",{message});
});
}
}
</script>
<style scoped>
</style>