uni-app单选框的实现

<view class="biaoqian mr40" v-for="(item, index) in list" :key="index" @click="tagselect(index)" :class="num == index ? 'biaoq' : '' ">{{ item.tag }}</view>
			</view>
                        
 tagselect(index) {
		     this.num = index;
		  }