微信小程序 checkbox使用实例解析

// pages/detail_add/detail_add.jsPage({ /**  * 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-www-form-urlencoded"    },    success: 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: 'success',        duration: 3000,        success: 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-www-form-urlencoded"   },   success: 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 #ccc; width: 310px; height: 40px;}.button{ margin-top: 20px;}.header text{ font-size: 25px; color: #666;}form text{ font-size: 20px; color: #666;}