<!doctype html> <html> <head> <meta charset="UTF-8"> <title>wacth属性</title> <script src="js/vue.js"></script> </head> <body> <div id="container"> <p>{{msg}}</p> <my-component></my-component> </div> <script> Vue.component("my-component",{ data:function(){ return { myInput:"", myPhone:123456 } }, template:` <div> <input type="text" v-model="myInput"/> <input type="text" v-model="myPhone"/> <span>{{myInput}}</span> </div> `, watch:{ myInput:function(){ //当数据发生变化、执行的操作 console.log("数据改变"); }, myPhone:function(){ console.log(this.myPhone); } } }) new Vue({ el:"#container", data:{ msg:"Hello VueJs" } }) </script> </body> </html>