js分类多选全选

效果如图：

HTML代码：

<div class="form-group quanxian-wrap">
     <label>项目</label>
     <form class="form-horizontal" style="border-top-left-radius: 4px;border-top-right-radius: 4px;">
         <div data-v-55b43bfa="" class="toolbar">
              <div data-v-55b43bfa="" class="form-group">
                    //模糊查询
                   <div data-v-55b43bfa="" class="form-group-bd dropdown" style="width: 400px">
                          <input type="search" class="weui-search-bar__input weui-flex__item form-control" id="searchInput" placeholder="请输入项目名称" style="border: 1px solid #ccc;" v-model="search " required="">
                   </div>
                    //点击显示隐藏下拉框
                   <div class="form-group-ft">
                           <button data-v-55b43bfa="" type="button" id="dropdownMenu1" data-toggle="dropdown" aria-haspopup="true" aria-expanded="true"  class="btn btn-default dropdown-toggle" v-on:click="checkSelectedButton">已选项目：{{bizShowList.length}}<span data-v-55b43bfa="" class="caret"></span></button>
                   </div>
                   <div data-v-fc6e5168="" class="dropdown-menu" style="display: block;"v-if="showSelectedProjects">
                         <div data-v-fc6e5168="" class="form-group">
                               <div data-v-fc6e5168="" class="col-sm-12">
                                     <div data-v-fc6e5168="" class="item-select" v-for="(item,index) in bizShowList">
                                           <span data-v-fc6e5168="">{{item.name}}</span>
                                           <a data-v-fc6e5168="" href="javascript:;" v-on:click="deleteSelectedItem" v-bind:title="index">
                                                 <i data-v-fc6e5168="" class="icon-del"></i>
                                           </a>
                                      </div>
                               </div>
                         </div>
                   </div>
            </div>
        </div>
    </form>
     //按片区分类，单选全选项目
    <form class="form-horizontal">
          <div class="form-group">
                <div class="col-sm-12">
                      <div class="biz-list" v-for="(project,index) in getBizList" :style="{hidden: project.hidden}">
                            <div class="biz-list-hd cf">   //片区选择
                                 <div class="checkbox" style="float: none;display: block;clear: both;" :style="{display: search ?'none':'block'}">
                                       <label>
                                             <input type="checkbox" v-model="project.checked" v-on:click="updateSelectedAreaList(index)">
                                                    <span >{{project.area}}</span>
                                       </label>
                                 </div>
                            </div>
                            <div class="biz-list-bd cf">    //项目选择
                                  <div class="checkbox" v-for="(item,index) in project.data" :style="{display:item.name.indexOf(search) > -1?'block':'none'}">
                                        <label>
                                             <input type="checkbox" v-model="item.checked" v-on:click="updateSelectedProjectList"><span>{{item.name}}</span>
                                        </label>
                                  </div>
                            </div>
                       </div>
                  </div>
             </div>
       </form>
 </div>

JS：

export default {
        data() {
            return {
                showSelectedProjects: false,
                search: ''

            };
        },
        computed: {
            // 关联项目列表
            getBizList() {
                this.bizList = cloneObject(this.$store.state.user.bizList);
                this.bizList.splice(0, 1);
                let data = this.bizList;
                console.log(333,data);
                for(let i=0;i<data.length;i++) {
                    if (data[i].area ==='' || data[i].area === null) {
                        data[i].area = '暂无片区';
                    }
                }
                return this.regroup(this.bizList);
            }
        },
        methods: {
            // 转换数据显示格式
            regroup(arr) {
                var map = {},
                    dest = [];
                // 对象数组 根据项目编号（id）字段 分组
                for (var i = 0; i < arr.length; i++) {
                    var ai = arr[i];
                    if (!map[ai.area]) {
                        dest.push({
                            area: ai.area,
                            data: [ai]
                        });
                        map[ai.area] = ai;
                    } else {
                        for (var j = 0; j < dest.length; j++) {
                            var dj = dest[j];
                            if (dj.area === ai.area) {
                                dj.data.push(ai);
                                break;
                            }
                        }
                    }
                }
                return dest;
            },
            //删除已选项目
            deleteSelectedItem(event) {
                let index = event.target.parentNode.title;
                let selectedItem = this.bizShowList[index];
                if (!selectedItem) return;
                this.bizShowList.forEach(item => {
                    if (item.appId == selectedItem.appId) {
                        item.checked = false;
                    }
                });
                this.updateSelectedProjectList();
            },// 单个项目选中
            updateSelectedProjectList() {
                this.showSelectedProjects = false;
                let list = [];
                let bizData = this.getBizList;
                for (let i = 0; i < bizData.length; i++) {
                    bizData[i].data.forEach(item => {
                        if (item.checked) {
                            list.push(item);
                        }
                    })
                }
               //判断如果该片区下所有项目被选中，则选中该片区，否则取消选中
                for (let i = 0; i < bizData.length; i++) {
                    for (let j = 0; j < bizData[i].data.length; j++) {

                        if (!bizData[i].data[j].checked) {
                            bizData[i].checked = false;
                            break
                        }
                        if (j === bizData[i].data.length - 1) {
                            bizData[i].checked = true;
                        }
                    }

                }
                this.bizShowList = list;
            },
            // 片区选择
            updateSelectedAreaList(index) {
                this.showSelectedProjects = false;

                let list = [];
                let bizData = this.getBizList;
            　　　//选择片区，则将该片区下所有项目选中，取消则不选中
                for (let j = 0; j < bizData[index].data.length; j++) {
                    bizData[index].data[j].checked = bizData[index].checked;
                }
　　　　　　　　　　//将最后选中的项目push到list数组中
                for (let i = 0; i < bizData.length; i++) {
                    bizData[i].data.forEach(item => {
                        if (item.checked) {
                            list.push(item);
                        }
                    })
                }

                this.bizShowList = list;
            },
　　　　}
}