vue中获取本地ip

<script src="http://pv.sohu.com/cityjson?ie=utf-8"></script>

 <template>
     <div>
         <h1>username:{{user.username}}</h1>
         <h1>age:{{user.age}}</h1>
         <h1>ip:{{user.ip}}</h1>
     </div>
 </template>
 
 <script>
 export default {
    data(){
        return{
            user:{
                ‘username‘:‘sj‘,
                ‘age‘:18,
                ‘ip‘:‘‘
            }
        }
    },
    mounted(){
        this.ready()
    },
    methods:{
        ready:function(){
                //获取本地IP地址
                //js 引入 <!-- 获取本机ip  -->
                //<script src="http://pv.sohu.com/cityjson?ie=utf-8">
            var cip = returnCitySN["cip"];
                //给vuedata对象里的字段赋值
            this.user.ip = cip
        }
    }
    
 }
 </script>