代码：
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=<device-width>, initial-scale=1.0"> <script crossorigin="anonymous" integrity="sha512-BKbSR+cfyxLdMAsE0naLReFSLg8/pjbgfxHh/k/kUC82Hy7r6HtR5hLhobaln2gcTvzkyyehrdREdjpsQwy2Jw==" src="https://lib.baomitu.com/vue/2.6.12/vue.min.js"></script> <title>Document</title> </head> <body> <!-- view --> <div id="app"> <h1>{{f1()}}</h1> <h1>{{f2}}</h1> </div> <!-- viewmodel --> <script> var vm = new Vue({ el:"#app", data: { message:"lbwnb" }, methods: { f1:function(){ return "f1的时间是："+Date.now(); } }, computed: { f2:function(){ this.message; return "f2的时间是："+Date.now(); } } }); </script> </body> </html>