微信小程序点击按钮重新加载页面数据

本人想实现点击提交按钮，将填写的数据显示到父级页面上，

1.首先想着就是实现刷新本页面，百度搜索给的答案是：this.onLoad();这个方法，发现这个不起作用，需要在onShow()这个生命周期才起作用，

2.又使用了

wx.navigateTo({

url: '',

})

跳转，虽然可以实现刷新页面数据，但是发现点击返回按钮，是退回到之前的本页面数据；

 

3.也是我解决问题的方法，点击提交数据，重新请求渲染数据的接口，重新赋值；

<view class='bigbox-ner' wx:for="{{courseList}}" wx:key="{{index}}" wx:for-index="index_s">
  <view class='courseCon'>
    <view class='bigbox-ner-top'>
    <text class='wen1'>{{item.course}}</text>
    <text class='wen2 {{item.if == "1"?"show":""}}'>{{item.if=="0"?'未上':'已上'}}</text>
    </view>
    <view class='gang'></view>
    <view class='classner'>
      <image class='icont3' src='/images/u015.png'></image>
      <text>{{item.title}}</text>
    </view>
    <view class='classner-title'>课程详情</view>
    <view class='classner-ner'>
      <text class='xqnr'>{{item.detail}}</text>
    </view>
    <view class='course'>
      <text class='course-w'>课程进度</text>
      <view class='progress'>
      <progress percent="{{item.baifen}}" border-radius='13rpx' font-size='30rpx' stroke-width='18rpx' activeColor='#53985F' backgroundColor='#92C29A'/>
      </view>
      <view class='showProgress'>{{item.progress}}/{{item.count}}</view>
    </view>
    <view class='anniuBox'  wx:if="{{!item.if}}">
     <button class='anniu' bindtap='courseleave' wx:if = '{{item.showleave == null}}'>请假</button>
     <view class='reason' wx:if='{{!item.showleave == ""}}'>缺勤：{{item.showleave}}</view>
    </view>
    <view class='anniuBox'  wx:if="{{!item.std && item.if}}">
     <button class='anniu' bindtap='courseFeedback' data-courseId="{{item.id}}">课堂反馈</button>
    </view>
    <view class='leave {{is_show == 1?"show":"hide"}}' >
      <view class='leave_mb' bindtap='close_tit'></view>
      <view class='leace_con'>
        <view class="close" bindtap='close_tit'>✖️</view>
        <view class='tit_title'>提示</view>
        <textarea placeholder='请填写请假原因' value='' bindinput='getval' focus></textarea>
        <button bindtap='submit_leave_val' data-courseId = "{{item.id}}">提交</button>
      </view>
    </view>

　　

submit_leave_val:function(e){
    let that =this;
    let courseId = e.target.dataset.courseid;
　　//　提交反馈数据
    app.commonRequest('wxapp/person/leave', 'POST', {
      'student_id': that.data.studentId,
      'period_id': courseId,
      'leave_msg': that.data.leave_val,
    }, function (data) {
      if(data.status == 200){
          wx.showToast({
            title: '提交成功',
            icon: 'success',
            duration: 1000
          })

        let nowdate1 = that.formatTime1(that.data.currentDate);
　　　　//重新渲染数据，
        that.getCourseShow(nowdate1, that.data.studentId)
      }else{
        wx.showToast({
          title: '提交失败',
          icon: 'fail',
          duration: 1000
        })
      }
    })
  },

getCourseShow: function (showdate, studentId){
    let that = this;
    app.commonRequest('wxapp/person/todaycourse', 'POST', {
      'time': showdate,
      'student_id': studentId
    }, function (data) {
      let studentlist = data.datainfo.studentlist;
      let courseList = data.datainfo.res;
      if (courseList == ""){
        that.setData({
          hasData:1
        })
      }else{
        that.setData({
          hasData: 0
        })
      }
      that.setData({
        courseList: data.datainfo.res,
        menberList: data.datainfo.studentlist,
      })
    })
  },