微信小程序 checkbox使用实例解析

// pages/detail_add/detail_add.js
Page({

 /
   页面的初始数据
  /
 data: {
  selectData: "", //下拉列表的数据
  height: 20,
  focus: false
 },
 checkboxChange: function(e) {
  console.log('checkbox发生change事件，携带value值为', e.detail.value)
  console.log("长度:" + e.detail.value.length);
  this.setData({
   typeId: e.detail.value,
   length: e.detail.value.length
  })


 },
 formSubmit: function(e) {
  console.log('form发生了submit事件，携带数据为' + e.detail.value.amount + ", " + e.detail.value.typeId + ", " + this.data.remark + ", " + this.data.date + ", " + this.data.time);

  var amount = e.detail.value.amount;
  var typeId = this.data.typeId;

  var date = this.data.date;
  var time = this.data.time;
  var remark = e.detail.value.remark;
  var createDate = date + " " + time;
  var length = this.data.length;
  console.log("length:" + length);
  console.log("date:" + date);
  console.log("time:" + time);
  console.log("createDate:" + createDate)

  if (amount == null || amount == "") {
   wx.showToast({
    title: "支出金额不能为空",
    icon: 'none',
    duration: 1500
   })
  } else if (typeId == null || typeId == "") {
   wx.showToast({
    title: "支出类型不能为空",
    icon: 'none',
    duration: 1500
   })

  } else if (length >= 2) {
   wx.showToast({
    title: "支出类型只能选择一种",
    icon: 'none',
    duration: 1500
   })
  } else if (date == null || date == "") {
   wx.showToast({
    title: "日期不能为空",
    icon: 'none',
    duration: 1500
   })
  } else if (time == null || time == "") {
   wx.showToast({
    title: "时间不能为空",
    icon: 'none',
    duration: 1500
   })
  } else if (remark == null || remark == "") {
   wx.showToast({
    title: "备注不能为空",
    icon: 'none',
    duration: 1500
   })
  } else {



   wx.request({

    url: getApp().globalData.urlPath + "spendingDetail/add",
    method: "POST",
    data: {
     amount: amount,
     typeId: typeId,
     createDate: createDate,
     remark: remark
    },
    header: {
     "Content-Type": "application/x--form-urlencoded"
    },
    suess: function(res) {
     console.log(res.data.code);
     if (res.statusCode == 200) {

      //访问正常
      if (res.data.code == "000000") {
       wx.showToast({
        title: "添加支出详情成功",
        icon: 'suess',
        duration: 3000,
        suess: function() {

         wx.navigateTo({
          url: '../detail/detail'
         })
        }
       })

      }
     } else {

      wx.showLoading({
       title: '系统异常',
       fail
      })

      setTimeout(function() {
       wx.hideLoading()
      }, 2000)
     }

    }
   })
  }


 },
 formReset: function() {
  console.log('form发生了reset事件')
 },
 bindDateChange: function(e) {
  console.log('picker发送选择改变，携带值为', e.detail.value)
  this.setData({
   date: e.detail.value
  })
 },
 bindTimeChange: function(e) {
  console.log('picker发送选择改变，携带值为', e.detail.value)
  this.setData({
   time: e.detail.value
  })
 },
 /
   生命周期函数--监听页面加载
  /
 onLoad: function(options) {
  wx.setNavigationBarTitle({

   title: "添加支出详情"

  })


  var userCode = wx.getStorageSync('userId').toString();
  var self = this;
  wx.request({
   url: getApp().globalData.urlPath + "spendingType/types", //json数据地址 
   data: {
    userCode: userCode
   },
   headers: {
    "Content-Type": "application/x--form-urlencoded"
   },
   suess: function(res) {
    console.log("res.data.data.typeName:" + res.data.data)

    self.setData({

     selectData: res.data.data

    })


   }
  })
 },

 /
   生命周期函数--监听页面初次渲染完成
  /
 onReady: function() {

 },

 /
   生命周期函数--监听页面显示
  /
 onShow: function() {

 },

 /
   生命周期函数--监听页面隐藏
  /
 onHide: function() {

 },

 /
   生命周期函数--监听页面卸载
  /
 onUnload: function() {

 },

 /
   页面相关事件处理函数--监听用户下拉动作
  /
 onPullDownRefresh: function() {

 },

 /
   页面上拉触底事件的处理函数
  /
 onReachBottom: function() {

 },

 /
   用户点击右上角分享
  /
 onShareAppMessage: function() {

 }
})

<form bindsubmit="formSubmit" bindreset="formReset">
 <view class="section">
  <text>支出金额</text>
  <input name="input" name="amount" placeholder="请输入支出金额" />
 </view>

 <view class="section">
  <text>支出类型</text>
  <checkbox-group bindchange="checkboxChange">
   <label class="checkbox" wx:for="{{selectData}}">
    <checkbox value="{{item.typeId}}" checked="{{item.checked}}" />{{item.typeName}}
   </label>
  </checkbox-group>

 </view>

 <view>
  <text>创建时间</text>
  <view class="section">
   <picker mode="date" value="{{date}}" start="2018-09-01" end="2030-09-01" bindchange="bindDateChange">
    <view class="picker">
     选择日期: {{date}}
    </view>
   </picker>
  </view>
  <view class="section">
   <picker mode="time" value="{{time}}" start="00:00=" end="23:59" bindchange="bindTimeChange">
    <view class="picker">
     选择时间: {{time}}
    </view>
   </picker>
  </view>
 </view>
 <view class="section">
  <text>备注</text>
  <input name="input" name="remark" placeholder="请输入备注" />
 </view>
 <view>
  <text>\n</text>
 </view>
 <view class="btn-area">
  <button form-type="submit">提交</button>
  <view>
   <text>\n</text>
  </view>
  <button form-type="reset">重置</button>
 </view>
</form>

self.setData({
  selectData: res.data.data
 })

/ pages/login/login.wxss /
form{
 width: 310px;
 height: 240px;
 line-height: 40px;
 / border: 1px solid red; /
}
input{
 border: 1px solid #c;
 width: 310px;
 height: 40px;
}
.button{
 margin-: 20px;
}
.header text{
 font-size: 25px;
 color: #666;
}
form text{
 font-size: 20px;
 color: #666;
}