<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>非父子组件之间的传值</title> </head> <body> <div id="app"> <child content="Dell"></child> <child content="Lee"></child> </div> <!-- 开发环境版本，包含了用帮助的命令行警告 --> <script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script> <script type="text/javascript"> Vue.prototype.bus = new Vue(); Vue.component('child', { data: function() { return { selfContent: this.content } }, props: { content: String }, template: `<div @click="handleClick">{{selfContent}}</div>`, methods: { handleClick: function() { this.bus.$emit('change', this.selfContent); } }, mounted: function() { var _this = this; this.bus.$on('change', function(msg) { _this.selfContent = msg; }) } }) var app = new Vue({ el: '#app' }) </script> </body> </html>