H5登录js代码

    var login=function(){
        var a={
            Name:$("#login-details input[name='Name']").val(),
            Password:$("#login-details input[name='Password']").val(),
            remember:$("#login-details input[name='remember']").is(":checked")?1:0};
        $.ajax({
            url:"/User/Login",
            type:"post",
            dateType:"json",
            data:a,
            success:function(c){
                if(c.result!=1){
                    $("#login-details span[data-target='login-msg']").text(c.msg).show()
                }
                else{
                    var b=document.referrer;
                    if(b==""||b==undefined||b==null){
                        location.href="https://www.lantola.com"
                    }
                    else{
                        location.href=""+b+""
                    }
                }
            },
            error:function(b){}
        });
        return false
    };

小程序wxml

  <form action="" bindsubmit="loginSubmit">
    <view>手机号码 / 企业名称</view>
    <view><input type="text" name="username" confirm-type="next"/></view>
    <view>密码</view>
    <view><input type="text" name="password" password/></view>
    <label>
      <checkbox checked="checked"></checkbox>
      <text>保持登录状态</text>
    </label>
    <button formType="submit">登录</button>
  </form>

小程序js

var app = getApp();
Page({
  /**
   * 页面的初始数据
   */
  data:{
    username:'',
    password:''
  },
  loginSubmit:function(e){
    let{username,password}=e.detail.value;
    if(!username || !password){
      wx.showToast({
        title: '用户名或密码错误',
        icon:'none'
      })
    }
  }
})

用的腾讯云服务器，H5是程序猿写的。目前自学小程序写法，不知道这个$.ajax({ })该怎么写。是不是很难学？求指点

只会写错误时信息提示。。。