<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Document</title> </head> <body> <div id="box" v-once> <!-- 控制数据不变 一直为初始值 --> {{msg}} <div> {{msg}} </div> </div> </body> <script type="text/javascript" src="js/vue.js"></script> <script type="text/javascript"> vu = new Vue({ el:"#box", data:{ msg:"aaaac" } }) vu.$data.msg=‘2323‘; </script> </html>
原文：http://www.cnblogs.com/jinsuo/p/7512751.html