<script type="text/javascript">

            layui.extend({

                admin: '{/}./js/admin'

            });

            layui.use(['form','admin','jquery'], function(){

                var $ = layui.jquery;

              var form = layui.form

                  ,admin = layui.admin;

              form.on('submit(loginUser)', function(data){

                  $.ajax({

                      url:"./loginUser",

                      type:"post",

                      data:data.field,

                      dataType:"json",

                      success:function (datas) {

                          alert(1);

                          if (datas.msg=="index"){

                              layer.msg('登录成功', function(){

                                  //do something

                                  // location.href='./index'

                              });

                          } else {

                              layer.msg('登录失败，请检查账号密码是否正确');

                          }

                      }

                  });

                return false;

              });

            });

    </script>