<!DOCTYPE html><html lang="en"><head><meta charset="UTF-8"><title>Title</title><!--1 引入vue的js文件--><script src="js/vue-2.6.10.js"></script></head><body><div id="root"><h2>{{msg}}</h2><input type="text" v-model="username"/><span>{{username}}</span></div></body></html><script>let vm = new Vue({el:"#root",data(){return{msg: "软件学院",username:""}}})</script>
