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vue global event bus
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| <!doctype html> | |
| <html lang="en"> | |
| <head> | |
| <meta charset="UTF-8"> | |
| <meta name="viewport" | |
| content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0"> | |
| <meta http-equiv="X-UA-Compatible" content="ie=edge"> | |
| <title>Vue Event Bus</title> | |
| </head> | |
| <body> | |
| <div id="app"> | |
| <my-component></my-component> | |
| <p>parent: {{message}}</p> | |
| </div> | |
| <script src="https://vuejs.org/js/vue.js"></script> | |
| <script> | |
| const EventBus = new Vue(); | |
| Object.defineProperties(Vue.prototype, { | |
| $bus: { | |
| get: function () { | |
| return EventBus | |
| } | |
| } | |
| }); | |
| Vue.component('my-component', { | |
| template: `<button @click="handleClick">click</button>`, | |
| methods: { | |
| handleClick () { | |
| this.$bus.$emit('on-event', 'some message'); | |
| } | |
| } | |
| }); | |
| new Vue({ | |
| el: '#app', | |
| data: { | |
| message: 'hello vue' | |
| }, | |
| created () { | |
| this.$bus.$on('on-event', val => { | |
| this.message = val; | |
| }); | |
| } | |
| }); | |
| </script> | |
| </body> | |
| </html> |
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