vue3，Element Plus中el-select默认显示0

el-select默认显示0

<el-select v-model="queryDTO.checkGroupId" placeholder="请选择" clearable filterable style="width: 240px">

  <el-option v-for="item in checkGroupOptions" :key="item.key" :label="item.label" :value="item.key" />

</el-select>

// 查询对象

interface QueryDTO {

  page?: number;

  size?: number;

  outerApplyId?: string;

  checkGroupId?: number;

  sjdwName?: string;

  submitDateBegin?: string;

  submitDateEnd?: string;

  receiveDateBegin?: string;

  receiveDateEnd?: string;

}

中的 checkGroupId?: number; 改为 checkGroupId?: number | null;

queryDTO.value.checkGroupId = 0;

再将 queryDTO.value.checkGroupId = 0; 改为 queryDTO.value.checkGroupId = null;