微信小程序实现留言功能

需求：留言可以点赞，点过赞之后图标变化，没人只能点赞一次，留言可以在留言

index.wxml

<view> <view> <view>邻居评论（{{yanlist.count}}）</view> <view data-id="0" data-user="{{list.user_id}}" bindtap='liuynChange'>我要留言</view> </view> <view> <view wx:for="{{yanlist.list}}"> <view> <view> <view> <image src='https://www.jb51.net/{{item.avatar}}'></image> </view> <view> <view> <view>{{item.nick_name}}</view> <view>{{item.create_date}}</view> </view> <view> <text space="emsp">{{item.content}}</text> </view> </view> </view> <view> <view> <image data-id="{{item.id}}" data-user="{{item.user_id}}" bindtap='liuynChange' src='https://jpadmin.99dudesign.com/public/img/source/btn_icon_huifu.png'></image> </view> <view> <!-- <image src='https://jpadmin.99dudesign.com/public/img/source/btn_icon_zhendianzan.png' data-id="{{item.id}}" bindtap='llzanChange'></image> --> <view data-id="{{item.id}}" bindtap='llzanChange'></view> <view data-text="{{item.like_count}}">{{item.like_count}}</view> </view> </view> </view> <view wx:if="{{item._child}}!=null" wx:for="{{item._child}}"> <view> <view> <image src='https://www.jb51.net/{{item.avatar}}'></image> </view> <view> <view> <view>{{item.nick_name}}</view> <view>{{item.create_date}}</view> </view> <view> <text space="emsp">{{item.content}}</text> </view> </view> </view> <view> <view data-text="{{item.like_count}}">{{item.like_count}}</view> <view data-id="{{item.id}}" bindtap='llzanChangeTwo'></view> </view> </view> </view> </view> </view> <!-- 留言 --> <view bindtap='llbquxiao'></view> <view> <view>留言</view> <textarea value="{{llbcontent}}" bindinput="llbInput"></textarea> <view> <view bindtap='llbquxiao'>取消</view> <view bindtap='llbChange'>确定</view> </view> </view>

主要的wxss代码（用于点赞的展示，实现小手、空心小手）

.nodzimg2 { background: url(空心); background-size: 100%; } .dzimg2 { background: url(实心); background-size: 100%; }

js

var liuynfun = function (that) { wx.request({ url: getApp().data.host + '...', method: "POST", data: { "column": "Routine", "row_id": that.data.url }, header: { 'content-type': 'application/x-www-form-urlencoded' }, success: function (res) { if (res.data.list != "") { //第一行留言 for (var i in res.data.list) { res.data.list[i].lldzView = false; if (res.data.list[i].like_user != null) { if (res.data.list[i].like_user.indexOf(wx.getStorageSync('user_id')) != "-1") { res.data.list[i].lldzView = true } } // 第二行留言 if (res.data.list[i]._child){ for (var j in res.data.list[i]._child){ res.data.list[i]._child[j].cnmView=false if (res.data.list[i]._child[j].like_user != null) { if (res.data.list[i]._child[j].like_user.indexOf(wx.getStorageSync('user_id')) != "-1") { res.data.list[i]._child[j].cnmView = true } } } } } } that.setData({ yanlist: res.data }) } }) }

从后台传过来的数据

留言里面的留言

js

点击我要留言

liuynChange: function (e) { var that = this; console.log(e.currentTarget.dataset.id) that.setData({ llbView: true, pid: e.currentTarget.dataset.id, to_user_id: e.currentTarget.dataset.user }) },

留言点赞

llzanChangeTwo: function (e) { console.log(e) var that = this; wx.request({ url: getApp().data.host + '...', method: "POST", data: { "column": "Reply", "user_id": wx.getStorageSync('user_id'), "id": e.currentTarget.dataset.id }, header: { 'content-type': 'application/x-www-form-urlencoded' }, success: function (res) { var data = that.data.yanlist console.log(data) if (res.data != null) { if (res.data.indexOf(wx.getStorageSync('user_id')) == "-1") { for (var i in data.list) { if (data.list[i]._child) { for (var j in data.list[i]._child) { if (e.currentTarget.dataset.id == data.list[i]._child[j].id) { data.list[i]._child[j].cnmView=true data.list[i]._child[j].like_count = parseInt(data.list[i]._child[j].like_count) + 1 } } } } that.setData({ yanlist: data }) } } else { for (var i in data.list) { if (data.list[i]._child) { for (var j in data.list[i]._child) { if (e.currentTarget.dataset.id == data.list[i]._child[j].id) { data.list[i]._child[j].cnmView = true data.list[i]._child[j].like_count = parseInt(data.list[i]._child[j].like_count) + 1 } } } } that.setData({ yanlist: data }) } } }) },

点赞返回的为点赞人的id

其中所得View初始化全部为false