一个简单的vue实例页面

 var app = new Vue({
            el: '#app',
            data: {
                username: '',
                password:''
            }
            ,methods: {
                login: function () {
                    if(!this.username){
                        error("用户名不能为空");
                    }
                    if(!this.password){
                        error("用户名不能为空");
                    }
                    layer.load()
                    var password = hex_md5(this.password);
                    var url = URL+"/api/user/login"
                    $.post(url,{username:this.username,password:password},function (e) {
                        layer.closeAll()
                        if(e.code ==200){
                            var from_url = $.cookie('formUrl');
                            if(from_url){
                                location.href = from_url;
                            }else {
                                location.href = 'https://www.qudong.com';
                            }
                        }else {
                            error("用户名或密码错误");
                        }
                    })
                }
                ,reg:function () {
                    location.href='https://hao.qudong.com/register';
                }
            },
            mounted:function(){
                //页面挂载需要运行的函数
            }
        })