小程序中点赞和收藏功能的实现代码

收藏功能：

focusFavoriteTab: function (e) {     var that = this;     var isFocus = that.data.isFocus;     console.log("isFocus", isFocus)     var itemId = that.data.itemId;     if (isFocus) {       favoriteService.cancel(that, itemId).then((res) => {         wx.showToast({           title: "取消收藏",           icon: 'success',           duration: 1000         });         this.setData({           isFocus: false,         });       })     } else {       favoriteService.add(that, itemId).then((res) => {         wx.showToast({           title: res.data == 1 ? "收藏成功" : "收藏失败",           icon: 'success',           duration: 1000         });         this.setData({           isFocus: true,         });       });     }   },

点赞功能：

focuslikeTab: function (e) {     var that = this;     var isLike = that.data.isLike;     let itemDetail = this.data.itemDetail      var itemId = that.data.itemId;     if (isLike) {       itemService.cancellike(that, itemId).then((res) => {         wx.showToast({           title: "点赞取消",           icon: 'success',           duration: 1000         });         itemDetail.liked--;         this.setData({           itemDetail:itemDetail         });         this.setData({           isLike: false,         });       })     } else {       itemService.addlike(that, itemId).then((res) => {         wx.showToast({           title: res.data == 1 ? "点赞成功" : "点赞失败",           icon: 'success',           duration: 1000         });         itemDetail.liked++;         this.setData({           itemDetail: itemDetail         });         this.setData({           isLike: true,         });       });     }   },

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