var token = window.localStorage.getItem("token");
Vue.http.interceptors.push(function(request, next) {
 request.headers.set('token', token); //setting request.headers
 next(function(response){
 if(response.body.code===401){ //與后臺約定登錄失效的返回碼
 parent.location.href ='/login.html';
 }
 return response
 })
})