VUE Duplicate keys detected: 'XXX'. This may cause an update error

上图

warning.jpg

warning写法.jpg

修改方法,如图改变key即可

 <el-select v-model="" style="width: 10%" placeholder="" clearable filterable>
                            <el-option
                                v-for="(item,index) in Data"
                                :key="index"
                                :label="item.value"
                                :value="item.value">
                              </el-option>
</el-select>

vans.png