微信小程序---评论功能实现

index.wxml:

提交评论：

    <!-- 评论 -->
    <!--textarea-->
    <view class="message">
      <form bindsubmit="formSubmit" class='form'>
        <input type="text" name="liuyantext" placeholder='留下你精彩的评论吧' value='{{keyValue}}' class="input-style" />
        <button formType="submit" class="btn">发送</button>
        <input type="text" name="nickname" value='{{videoid}}' style="display:none;" />
        <input type="text" name="headimg" value='{{avatarUrl}}' style="display:none;" />
      </form>
    </view>

显示全部评论：

    <view class='allMessage'>
      <view class="title">
        <text>全部评论</text>
      </view>
      <view class='tab-content'>
        <view class='comment-list'>
        <!-- 提交评论显示 -->
          <view class='comment-item' class="{{showOrHidden?'show':'hide'}}" style='width: 100%;height: auto;overflow: hidden;padding: 16px 0;border-bottom: 1px solid #f3f3f5;'>
            <view class='comment-person'>
              <image class='comment-person-avatar' src='{{photo2}}'></image>
              <view class='comment-person-info ellipsis'>
                <view class='comment-person-name ellipsis'>{{nickname2}}</view>
                <view class='comment-time ellipsis'>{{date2}}</view>
              </view>
            </view>
            <view class='comment-text'>{{comment2}}</view>
          </view>

       
          <!-- 读取数据显示全部评论 -->
          <view class='comment-item' wx:for="{{comment}}" wx:key="{{item.id}}">
            <view class='comment-person'>
              <image class='comment-person-avatar' src='{{item.photo}}'></image>
              <view class='comment-person-info ellipsis'>
                <view class='comment-person-name ellipsis'>{{item.nickname}}</view>
                <view class='comment-time ellipsis'>{{item.created_at}}</view>
              </view>
            </view>
            <view class='comment-text'>{{item.content}}</view>
          </view>
        </view>
      </view>
    </view>

index.wxss:

提交评论样式：

.form{
  width: 94%;
  margin:0 auto;
}
.input-style{
  width: 70%;
  height: 40px;
  border-radius: 25px;
  background: #f3f3f5;
  font-size: 14px;
  /* text-indent: 15px; */
  padding-left: 15px;
  float: left;
  color:#808286;
}
 
.btn{
  width: 20%;
  font-size: 14px;
  float: right;
  border-radius: 10px;
  color: #2c3036;
  background: #f3f3f5;
  letter-spacing: 2px;
}
 
.liuyanview{
  width: 90%;
  margin: 10px auto;
}
 
.result{
  text-align: center;
  font-size: 14px;
  color: #f00;
  margin-top: 20px;
}
 
.headimg{
  width: 45px;
  height: 45px;
  border-radius: 100%;
}
 
.headimg image{
  width: 45px;
  height: 45px;
  border-radius: 100%;
}
 
.nickname_liuyantext{
  width: calc(100% - 55px);
  float: right;
  margin-top:-45px;
}
 
.nickname_liuyantext .nickname{
  font-size: 15px;
  color: #999;
}
 
.nickname_liuyantext .nickname .time{
  font-size: 11px;
  color: #999;
  float: right;
}
 
.nickname_liuyantext .text{
  font-size: 16px;
  color: #666;
}

.message{
  width: 100%;
  height: 50px;
  display: flex;
  padding: 10px auto;
   background-color: #fff;
   position: fixed;
   bottom:0;
}

显示全部评论样式：

/* 全部评论 */
.allMessage {
  clear: both;
  width: 92%;
  margin: 0 auto;
  padding: 4%;
  background-color: #fff;
  padding-bottom: 120rpx;
}

.allMessage .title {
  border-left: 5px solid #2c3036;
  /* margin: 12px 0; */
  height: 20px;
  line-height: 20px;
  text-indent: 10px;
  color: #2c3036;
  font-size: 18px;
  margin-bottom: 10px;
}

.comment-item {
  width: 100%;
  height: auto;
  overflow: hidden;
  padding: 16px 0;
  border-bottom: 1px solid #f3f3f5;
}

.comment-person {
  display: flex;
  align-items: center;
}

.comment-person-avatar {
  width: 42px;
  height: 42px;
  border-radius: 21px;
  margin: 0 10px 0 0;
  flex: 0 0 42px;
}

.comment-person-info {
  flex: 1;
}

.comment-person-name {
  font-size: 16px;
  font-weight: 800;
  color: #2c3036;
}

.comment-time {
  font-size: 13px;
  color: #808286;
}

.comment-text {
  font-size: 14px;
  color: #2c3036;
  line-height: 25px;
  padding: 24rpx 0 0 20px;
}

.goods-box .goods-thumb {
  width: 300rpx;
  height: 300rpx;
  margin: 35rpx 0 125rpx;
}

.to-carts-icon {
  position: absolute;
  right: 70rpx;
  top: 70rpx;
  width: 10rpx;
  height: 10rpx;
  border-radius: 50%;
  opacity: 0.6;
  -webkit-animation: to_cart 0.3s ease-out;
  animation: to_cart 0.3s ease-out;
}

@-webkit-keyframes to_cart {
  0% {
    right: 100rpx;
    top: 530rpx;
    -webkit-transform: scale(4);
  }/*60%{
        top: 20rpx;
    }*/
}

@keyframes to_cart {
  0% {
    right: 100rpx;
    top: 530rpx;
    transform: scale(4);
  }/*60%{
        top: 20rpx;
    }*/
}

.carts-icon {
  position: absolute;
  right: 40rpx;
  top: 40rpx;
  width: 75rpx;
  height: 75rpx;
}

.carts-icon image {
  width: 100%;
  height: 100%;
}

.carts-icon.on {
  -webkit-animation: to_cart_scale 0.3s ease;
  animation: to_cart_scale 0.3s ease;
}

@-webkit-keyframes to_cart_scale {
  50% {
    -webkit-transform: scale(1.2);
  }
}

@keyframes to_cart_scale {
  50% {
    transform: scale(1.2);
  }
}

.carts-icon-num {
  position: absolute;
  left: -15rpx;
  width: 40rpx;
  height: 40rpx;
  line-height: 40rpx;
  border-radius: 50%;
  background: #ab956d;
  color: #fff;
  font-size: 24rpx;
}

.goods-box .goods-operation {
  position: relative;
  width: 100%;
  height: 100rpx;
  line-height: 100rpx;
  padding: 0 50rpx;
  margin-bottom: 60rpx;
  box-sizing: border-box;
  border-radius: 50rpx;
  background: #76b44e;
  color: #fff;
  font-size: 28rpx;
}

.goods-operation text {
  display: inline-block;
  height: 100rpx;
}

.goods-operation-num {
  width: 160rpx;
}

.goods-operation-add {
  width: 80rpx;
  margin-right: 30rpx;
}

.goods-to-cart {
  width: 210rpx;
  padding-right: 75rpx;
}

.goods-cart-img {
  position: absolute;
  right: 50rpx;
  top: 28rpx;
  width: 45rpx;
  height: 45rpx;
}

.goods-stock {
  font-size: 28rpx;
  margin-bottom: 20rpx;
}

.goods-price {
  font-size: 40rpx;
}

.goods-tab-nav {
  display: inline-block;
  width: 33.33%;
  height: 90rpx;
  line-height: 90rpx;
  border-bottom: 1rpx solid #ededed;
  box-sizing: border-box;
  text-align: center;
  color: #c7c7cb;
}

.goods-tab-nav.on {
  color: #bcaa8a;
  border-bottom: 5rpx solid #bcaa8a;
}

.goods-content {
  padding: 40rpx;
  font-size: 13px;
}

button::after {
  border: none;
}

button {
  background: none;
}

.shareMain {
  width: 100%;
  margin: 30px 0;
}

.shareMain .mainList {
  overflow: hidden;
  margin: 0 auto;
  text-align: center;
}

.shareMain .title {
  margin: 0 auto;
  text-align: center;
  font-size: 13px;
  margin-top: -13px;
}

js：

  formSubmit: function(e) {
    console.log(app.globalData.userInfo.nickName);
    wx.showToast({
      title: '评论成功',
      icon: 'success',
      duration: 3000
    })
    var that = this;
    var liuyantext = e.detail.value.liuyantext; //获取表单所有name=liuyantext的值 
    console.log('视频id' + that.data.id);
    console.log('留言number:' + that.data.number);
    wx.request({
      url: 'https://xxxx/comment',
      data: {
        content: liuyantext,
        number: that.data.number,
        id: that.data.id
      },

      header: {
        'Content-Type': 'application/json'
      },
      success: function(res) {
        // console.log(res.data)
        that.setData({
          showOrHidden: true,
          re: res.data,
          keyValue:'',
          photo2: res.data.result.comment.photo,
          nickname2: res.data.result.comment.nickname,
          date2: res.data.result.comment.date,
          comment2: res.data.result.comment.comment
        })
        wx.hideToast();
        console.log(res);
       
      }
      
    })
  },

原文链接：https://blog.csdn.net/u012054869/article/details/87096912