小程序，全选，反选，取消选中

原创

成都阿信 2022-07-13 21:39:47 ©著作权

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//编辑相关操作
    //编辑按钮
    goEdit() {
        var self = this
        let isEdit = !self.data.isEdit
        self.setData({isEdit: isEdit})

        //取消编辑的时候，每个编辑选中回到初始态, 全选回到初始态
        if (isEdit === false) {
            let dataList = self.data.goodsList
            for (let obj of dataList) {
                obj.edit_choice = false
            }
            self.setData({goodsList: dataList, editAllChoice: false})
        }
    },
    //编辑时：选择
    chooseOne(e) {
        var self = this
        let currentItem = e.currentTarget.dataset.item;
        //当前item在当前goodsList中的下标
        debugger
        var goodsList = self.data.goodsList;
        let currentIndex = app.tool.mallIndexOfObj(goodsList, currentItem);
        currentItem.edit_choice = !currentItem.edit_choice;
        // 在goodsList替换当前item
        goodsList.splice(currentIndex, 1, currentItem);

        //判断是否全选
        var isAll = true
        for (let obj of goodsList) {
            if (!obj.edit_choice) {
                isAll = false
                break
            }
        }
        //更新当前数据
        self.setData({goodsList: goodsList, editAllChoice: isAll});
    },


/**
     * 商城列表根据元素取下标
     */
    mallIndexOfObj: function (arr, obj) {
        //console.log('数据源', arr);
        //console.log('目标数据', obj);
        for (var index in arr) {
            //该函数需要兼容套餐活动的商品，做改动兼容
            if(obj.product_id){
                if (arr[index].product_id === obj.product_id) {
                    return index;
                }
            }

            if(obj.activity_id){
                if (arr[index].activity_id === obj.activity_id) {
                    return index;
                }
            }

        }
        return -1;
    },

//编辑相关操作
//编辑按钮
goEdit() {
var self = this
let isEdit = !self.data.isEdit
self.setData({isEdit: isEdit})

    //取消编辑的时候，每个编辑选中回到初始态, 全选回到初始态
    if (isEdit === false) {
        let dataList = self.data.goodsList
        for (let obj of dataList) {
            obj.edit_choice = false
        }
        self.setData({goodsList: dataList, editAllChoice: false})
    }
},
//编辑时：选择
chooseOne(e) {
    var self = this
    let currentItem = e.currentTarget.dataset.item;
    //当前item在当前goodsList中的下标
    debugger
    var goodsList = self.data.goodsList;
    let currentIndex = app.tool.mallIndexOfObj(goodsList, currentItem);
    currentItem.edit_choice = !currentItem.edit_choice;
    // 在goodsList替换当前item
    goodsList.splice(currentIndex, 1, currentItem);

    //判断是否全选
    var isAll = true
    for (let obj of goodsList) {
        if (!obj.edit_choice) {
            isAll = false
            break
        }
    }
    //更新当前数据
    self.setData({goodsList: goodsList, editAllChoice: isAll});
},

/**
* 商城列表根据元素取下标
*/
mallIndexOfObj: function (arr, obj) {
//console.log('数据源', arr);
//console.log('目标数据', obj);
for (var index in arr) {
//该函数需要兼容套餐活动的商品，做改动兼容
if(obj.product_id){
if (arr[index].product_id === obj.product_id) {
return index;
}
}

        if(obj.activity_id){
            if (arr[index].activity_id === obj.activity_id) {
                return index;
            }
        }

    }
    return -1;
},