<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <meta http-equiv="X-UA-Compatible" content="ie=edge"> <title>Document</title> <script src="./lib/vue-2.4.0.js"></script> </head> <body> <div id="app"> <counter></counter> <hr> <counter></counter> <hr> <counter></counter> </div> <template id="tmpl"> <div> <input type="button" value="+1" @click="increment"> <h3>{{count}}</h3> </div> </template> <script> var dataObj = { count: 0 } // 这是一个计数器的组件, 身上有个按钮,每当点击按钮,让 data 中的 count 值 +1 Vue.component('counter', { template: '#tmpl', data: function () { // return dataObj return { count: 0 } }, methods: { increment() { this.count++ } } }) // 创建 Vue 实例，得到 ViewModel var vm = new Vue({ el: '#app', data: {}, methods: {} }); </script> </body> </html>