微信小程序简单form提交自带判断

form表单的简单利用
wxml

  <form bindsubmit="submit" bindreset="Reset">
  <view >
    <view>用户名：</view>
    <label><input name="userName"  placeholder="请输入用户名！" /></label>
  </view>
  <view>
    <view>密码：</view>
    <label><input name="psw"  placeholder="请输入密码！" password="true" /></label>
  </view>
  <view style="display:flex;">
    <button  formType="submit" >登录</button>
    <button  formType="reset" >重置</button>
  </view>
</form>
<view class="errod">{{tip}}</view>
<view class='inform'>账号：{{userName}}</view>
<view class='inform'>密码：{{psw}}</view>

js代码

Page({
  data: {
    tip:'',
    userName:'',
    psw:''
  },
   formBindsubmit:function(e){
    if(e.detail.value.userName.length==0||e.detail.value.psw.length==0){
       this.setData({
        tip:'提示：用户名和密码不能为空！',
        userName:'',
        psw:''
      })
    }else{
       var that = this 
        that.setData({
            userName:e.detail.value.userName,
            psw:e.detail.value.psw
        })
      }    
  },
  Reset:function(){
    this.setData({
      tip:'',
      userName:'',
      psw:''
    })
  }
})

也可以修改为直接提交到接口，判断用户名密码是否一致等等，一系列的