本文实例为大家分享了微信小程序实现留言板的具体代码，供大家参考，具体内容如下

CSS：

/* pages/order/message2/message2.wxss */
 .msg-box{
 padding: 20px;
 }
 .send-box{
 display: flex;
 }
 .input{
 border: 1px solid #B0C4DE;
 padding: 5px;
 }
.msg-info{
 display: block;
 margin: 10px 0 0 0 ;
 color: #339900;
 
 }
 .place-input{
 color: salmon;
 }
 .list-view{
 margin: 20px 0 0 0;
 }
 .item{
 overflow: hidden;
 border-bottom: 1px dashed #87CEFF;
 height: 30px;
 line-height: 30px;
 }
 .text1{
 float: left;
 }
 .close-btn{
 float: right;
 margin: 5px 5px 0 0;
 }

js：

const app = getApp();
Page({
 
 /**
 * 页面的初始数据
 */
 data: {
 
 msgData:
 [
 {
 child_id: 1,
 msg:
 "我想做个眉毛，到店后求推荐。",
 
 checked:''
 },
 {
 child_id: 2,
 msg:
 "我只有2小时，您看着安排吧。",
 checked: ''
 },
 {
 child_id: 3,
 msg:
 "我和朋友一起过来。",
 checked: ''
 },
 {
 child_id: 4,
 msg:
 "美甲样式到店挑选。",
 checked: ''
 },
 {
 child_id: 5,
 msg:
 
 "给眉毛再补个颜色。",
 checked: ''
 },
 {
 child_id: 6,
 msg:
 "我要补睫毛哦。",
 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.omeiclub.com/app/public/index.php/index/index/server',
 method: 'POST',
 data: { message_id: value, openId: app.globalData.openId, message: message, token: app.globalData.token},
 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.omeiclub.com/app/public/index.php/index/index/serversle',
 method: 'POST',
 data: { openId: app.globalData.openId, token: app.globalData.token},
 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 () {
 
 }
})

html

<!--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>