SOURCE

Vue.component("demo1",{
        data:function(){
            return {
                name:"",
                age:"",
                city:""
            }
        },
         template:"<ul><li id='name'>{{name}}</li><li>{{age}}</li><li>{{city}}</li></ul>",
        created:function(){
            this.name="唐浩益"
            this.age = "12"
            this.city ="杭州"
            //var x = document.getElementById("name")//第一个命令台错误
           //console.log(x.innerHTML);
        },
        mounted:function(){
            var x = document.getElementById("name")//第二个命令台输出的结果
            console.log(x.innerHTML);
        }
    });
    var vm = new Vue({
        el:"#app"
    })

<div id="app">
    <demo1></demo1>
</div>