<!DOCTYPE html> <html> <head> <meta charset="utf-8" /> <title></title> <script src="js/vue.js" type="text/javascript" charset="utf-8"></script> </head> <body> <div id="t"> <child></child> </div> <script> Vue.component("child",{ props:{ concent:{ type:String,//只能是String required:false,//不写可以 default:'default value'//默认值 } }, template:'<div>{{concent}}</div>' }) var vm=new Vue({ el:"#t" }) </script> </body> </html>