微信小程序实现留言板功能

const app = getApp();
Page({
 
 /**
 * 页面的初始数据
 */
 data: {
 
 msgData:
 [
  {
  child_id: 1,
  msg:
  "泡澡水不要太热。",
  checked:''
  },//双引号
  {
  child_id: 2,
  msg:
  "面部比较干，想补个水。",
  checked: ''
  },
  {
  child_id: 3,
  msg:
  "我只有2小时，您看着安排吧。",
  checked: ''
  },
  {
  child_id: 4,
  msg:
  "我想把眉毛在修下。",
  checked: ''
  },
  {
  child_id: 5,
  msg:
  "给我清个痘痘。",
  checked: ''
  },
  {
  child_id: 6,
  msg:
  "头疼，能轻点按。",
   checked:''
  }
 ],
 message: '',
 message_id:[],
 },
 bindTextAreaChange: function(e){
 var that = this
 that.setData({
  message:e.detail.value
 })
 },
 
 click:function(e){
 var that = this;
 let id = e.currentTarget.dataset.id;
 let index = e.currentTarget.dataset.index;
 var value = [];
 value = this.data.message_id;
 var array_i = this.in_array(id, value);
 var chekeds = that.data.msgData;
 var msg = chekeds[index].msg;
 var message = that.data.message;
 if (!e.currentTarget.dataset.checked){ 
  chekeds[index].checked = true
  that.setData({
  message: message + msg
  })
 }else{
  chekeds[index].checked = false
  that.setData({
  message: message.replace(msg, '')
  })
 }
 that.setData({
  msgData: chekeds
 })
 if (array_i) {
  value.splice(array_i, 1);
 } else {
  value.push(id);
 }
 this.setData({
  message_id: value,
 })
 },
 in_array: function (search, array) {
 for (var i in array) {
  if (array[i] == search) {
  return i;
  }
 }
 return false;
 },
 submit:function(){
 var value = [];
 var message = this.data.message;
 var msgData = this.data.msgData;
 if (message == '' && !value.length) {
  wx.showToast({
  title: '暂无选择项目',
  icon:'none'
  })
  return;
 }
 app.globalData.message = message;
 for (var i = 0; i < msgData.length; i++) {
  if(message.indexOf(msgData[i].msg) > -1){
  value[i] = msgData[i].child_id;
  }
 }
 wx.request({
  url: 'https://www.njnrkj.com/app/public/index.php/index/index/server',
  method: 'POST',
  data: {message_id: value, openId: app.globalData.openId, message: message},
  header: {
  'Accept': 'application/json'
  },
  success: function (res) {
  if(res){
   // wx.showToast({
   // title: '捎话成功',
   // success:function(){
    
   // }
   // })
   wx.switchTab({
   url: '/pages/order/order',
   success: function (e) {
    var page = getCurrentPages().pop();
    if (page == undefined || page == null) return;
    page.onLoad();
   }
   })
   app.globalData.message = message;
  }
  
  console.log(res)
  }
 })
 },
 
 /**
 * 生命周期函数--监听页面加载
 */
 onLoad: function (options) {
 var that = this;
 wx.request({
  url: 'https://www.njnrkj.com/app/public/index.php/index/index/serversle',
  method: 'POST',
  data: { openId: app.globalData.openId },
  header: {
  'Accept': 'application/json'
  },
  success: function (res) {
  if (res.data){
   var message_id = res.data.message_id;
   var value = that.data.msgData;
   var message = res.data.message;
   that.setData({
   message: message
   });
   for (var i = 0; i < value.length;i++) {
   if (that.in_array(value[i].child_id, message_id)) {
    value[i].checked = true;
    that.setData({
    msgData: value,
    });
   }
   }
  }
  }
 })
 
 },
 
 /**
 * 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 () {
 
 }
})

<!--pages/order/message/message.wxml-->
<view class='message_nav'>
 <form bindsubmit='FormSubmit'>
 <view class='section'>
 <textarea class='message1' type='text' placeholder="请选择或者输入捎话(60字以内)" maxlength='80' style="word- wrap:break-word" bindinput='bindTextAreaChange' value="{{message}}"></textarea>
</view>
 <view class='fast'>快速捎话：</view> 
<checkbox-group class="checkboxChange">
 <view wx:for="{{msgData}}" wx:key="{{index}}" data-index="{{index}}" data-id="{{item.child_id}}" data-checked='{{item.checked}}' bindtap='click' >
 <checkbox value='{{item.msg}}' class='item' checked='{{item.checked}}' >{{item.msg}}</checkbox>
 </view>
</checkbox-group>
<button class='submit' bindtap='submit'>捎话</button>
</form>
</view>

/* pages/order/message/message.wxss */
/*捎话 */
.message_nav{
 position: fixed;
 width: 100%;
}
.section{
width:96%;
height:220rpx;
margin-left:5px;
}
.message1{
 width:96%;
 height:210rpx;
 margin-top: 30rpx;
 font-size: 68%;
 margin-left:20px;
}
.circle{
 height:35rpx;
 width:35rpx;
 border-radius: 50%;
 border: 1rpx solid #ccc;
 display:inline-block;
 margin:28rpx 45rpx auto 50rpx;
 
}
.fast{
 position:relative;
 top:-50rpx;
 font-size:90%;
 background:#f4f4f4;
 line-height:100rpx;
 text-indent:2em;
}
.item{
position:relative;
border-bottom:1px solid #f4f4f4;
padding-bottom:10px;
top: -60rpx;
}
.item:hover{ 
background:pink; 
color: #f4f4f4; 
} 
.message_font{
 font-size:80%;
 font-family:"微软雅黑";
 font-weight:blod;
 display:inline-block;
 position:relative;
 top:-5rpx;
}
.submit{
 outline:none;
 border:none;
 list-style: none;
 width:100%;
 height: 100rpx;
 background: #fed1d6;
 position: relative;
 top:160rpx;
 line-height: 100rpx;
 -webkit-border-radius: 1rpx; 
 -moz-border-radius: 1rpx; 
 border-radius: 1rpx; 
 -webkit-appearance : none ; 
}
button::after{
 border:none;
 }
.item{
position:relative;
border-bottom:1px solid #f4f4f4;
padding-top:5px;
top: -60rpx;
width:100%;
padding-left: 45rpx;
}
.checkboxChange{
 position:relative;
 top:15rpx;
 font-size: 68%;
 border-radius: 50%;
}
/* .circle{
 border-radius: 50%;
} */