vue项目用的iview框架，input复选框默认被绑到一起，点击时一起选中和取消，需要单个

<Row v-if="showFlag == false" style="position: absolute;width: 100%;top:40px;left: 0;">

            <Scroll :height="scrollHeight"  >

                <Card class="zuo-fei-list-item" v-for="(item,index) in baseInfoListArr" :key="index" >

                     <label for="lab">

                        <Row class="margin-top-1rem">

                            <Col  class="text-align-left" span="9">原票证号码：</Col>

                            <Col class="text-align-left" span="15">{{item.dzsphm}}</Col>

                        </Row>

                        <Row class="margin-top-1rem">

                            <Col class="text-align-right">

                                <!-- <label for="lab"></label> -->

                                <input name="checkbox" type="checkbox" class="tui-checkbox" id="lab" v-model="check" :value="index" @click="ipt()">

                                <!-- <Checkbox v-model="check"></Checkbox> -->

                            </Col>

                        </Row>

                    </label>

                </Card>

            </Scroll>

        </Row>

注：baseinfolistarr是从后台获取的数据填充的，