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VueJs Event Bus


Event buses are a useful way of communicating between components which are not directly related, i.e. Have no parent-child relationship.
It is just an empty
instance, which can be used to
events or listen
the said events.


1. export default new Vue()


Use vuex if your application has a lot of components requiring the data of each other.



// setup an event bus, do it in a separate js file
var bus = new Vue()
// imagine a component where you require to pass on a data property
// or a computed property or a method!
Vue.component('card', {
 template: `<div class='card'>
 <div class='margin-5'>
 <input v-model='name'>
 <div class='margin-5'>
 <button @click='submit'>Save</button>
 data() {
 return {
 name: null
 methods: {
 submit() {
// In another component that requires the emitted data.
var data = {
 message: 'Hello Vue.js!'
var demo = new Vue({
 el: '#demo',
 data: data,
 created() {
 bus.$on('name-set', (name) => {
 this.message = name


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