在输入框内输入一个list，回车，添加到list列表中，点击列表中的项样式改变

 

1、index.html

2、main.js

// The Vue build version to load with the `import` command// (runtime-only or standalone) has been set in webpack.base.conf with an alias.import Vue from 'vue'import App from './App'Vue.config.productionTip = false/* eslint-disable no-new */new Vue({  el: '#app',  template: '
     ',  components: { App }})

3、App.vue