vueelement el-radio单选框点击切换显示隐藏

   <el-row>
          <el-col :span="10">
            <el-form-item label="是否通过认证：" :label-width="formLabelWidth" prop="isPass">
              <el-radio-group v-model="form.isPass">
                <el-radio :label="1" style="margin-left: 10px">是</el-radio>
                <el-radio :label="2" style="margin-left: 10px">否</el-radio>
              </el-radio-group>
            </el-form-item>
          </el-col>
          <el-col :span="14" style="min-width: 500px">
            <el-form-item label="有效期：" :label-width="formLabelWidth" 
            prop="date2" v-if="form.isPass == 1">
              <el-date-picker  v-model.trim="form.dateList2"  type="daterange"  
              range-separator="-" value-format="yyyy-MM-dd"   start-placeholder="开始日期"  
              end-placeholder="结束日期" @change="dateChange2">
              </el-date-picker>
            </el-form-item>
          </el-col>
        </el-row>

先绑定label值，再需要显示隐藏地方判断v-if=“form.isPass == 1”

reture {
 data {
      form: {
        date1: '',
        date2: '',
        id: '',
        isDelete: 0,
        isPass: '',
        level: '',
        status: '',
        unit: '',
        wssFileVO: [],
     },
  }
}