<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>非父子組件間傳值（Bus/總線/發佈訂閱模式/觀察者模式）</title> <script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script> </head> <body> <div id="root"> <child content="dell"></child> <child content="lee"></child> </div> <script type="text/javascript"> Vue.prototype.bus = new Vue() Vue.component('child', { props: { content: String }, data() { return { selfContent: this.content } }, template: '<div @click="handleClick">{{selfContent}}</div>', methods: { handleClick() { this.bus.$emit('change', this.selfContent) } }, mounted() { var _this = this this.bus.$on('change', (msg) => { _this.selfContent = msg }) } }) var vm = new Vue({ el: '#root' }) </script> </body> </html>