vue for循环key值 Duplicate keys detected: '1'. This may cause an update error.key
报错原因:用到两个相同的for循环,而这两个for循环的key值是一样的。 关键代码:
<div class="bg"> <div class="title" > <div class="showTitle" v-for="(item,index) in titleArr" :key="'index">{{item}}</div> <van-row v-for="(item,index) in list" :key="index"> <van-col span="8">{{item.time}}</van-col> <van-col span="8">{{item.sendNum}}</van-col> <van-col span="8">{{item.leftNum}}</van-col> </van-row> </div> </div> </div>
解决方案: 将其中一个key值拼接数字或者字符串,区分另一个key值即可!
<div class="bg"> <div class="title" > <div class="showTitle" v-for="(item,index) in titleArr" :key="'item'+index">{{item}}</div> <van-row v-for="(item,index) in list" :key="index"> <van-col span="8">{{item.time}}</van-col> <van-col span="8">{{item.sendNum}}</van-col> <van-col span="8">{{item.leftNum}}</van-col> </van-row> </div> </div> </div>
参考 Duplicate keys detected: '1'. This may cause an update error.key - 腾讯云开发者社区-腾讯云 (tencent.com)