# 删除多版本对象(Node.js SDK)
![](https://support.huaweicloud.com/sdk-nodejs-devg-obs/public_sys-resources/notice_3.0-zh-cn.png)
开发过程中，您有任何问题可以在GitHub上[提交issue](https://github.com/huaweicloud/huaweicloud-sdk-nodejs-obs/issues)，或者在[华为云对象存储服务论坛](https://bbs.huaweicloud.com/forum/forum-620-1.html)中发帖求助。
#### 功能介绍
可以通过ObsClient.deleteObject接口指定**VersionId参数** 删除多版本对象，接口定义请参见[删除对象(Node.js SDK)](https://support.huaweicloud.com/sdk-nodejs-devg-obs/obs_29_0606.html)。
可以通过ObsClient.deleteObjects接口传入每个待删除对象的**VersionId参数** 批量删除多版本对象，接口定义请参见[批量删除对象(Node.js SDK)](https://support.huaweicloud.com/sdk-nodejs-devg-obs/obs_29_0607.html)。
#### 代码示例一：删除单个多版本对象
本示例用于删除examplebucket桶中的example/objectname对象，对应的版本号是 G001117FCE89978B0000401205D5DC9A。
```
// 引入obs库
// 使用npm安装
const ObsClient = require("esdk-obs-nodejs");
// 使用源码安装
// var ObsClient = require('./lib/obs');
// 创建ObsClient实例
const obsClient = new ObsClient({
  // 推荐通过环境变量获取AKSK，这里也可以使用其他外部引入方式传入，如果使用硬编码可能会存在泄露风险
  // 您可以登录访问管理控制台获取访问密钥AK/SK，获取方式请参见https://support.huaweicloud.com/usermanual-ca/ca_01_0003.html
  access_key_id: process.env.ACCESS_KEY_ID,
  secret_access_key: process.env.SECRET_ACCESS_KEY,
  // 【可选】如果使用临时AK/SK和SecurityToken访问OBS，同样建议您尽量避免使用硬编码，以降低信息泄露风险。您可以通过环境变量获取访问密钥AK/SK，也可以使用其他外部引入方式传入
  // security_token: process.env.SECURITY_TOKEN,
  // endpoint填写Bucket对应的Endpoint, 这里以华北-北京四为例，其他地区请按实际情况填写
  server: "https://obs.cn-north-4.myhuaweicloud.com",
});
async function deleteObject() {
  try {
    const params = {
      // 指定存储桶名称
      Bucket: "examplebucket",
      // 指定删除对象，此处以 example/objectname 为例
      Key: 'example/objectname',
      // 指定版本对象的版本号
      VersionId: 'G001117FCE89978B0000401205D5DC9A'
    };
    // 删除版本对象
    const result = await obsClient.deleteObject(params);
    if (result.CommonMsg.Status <= 300) {
      console.log("Delete object(%s) under the bucket(%s) successful!", params.Key, params.Bucket);
      console.log("RequestId: %s", result.CommonMsg.RequestId);
      return;
    };
    console.log("An ObsError was found, which means your request sent to OBS was rejected with an error response.");
    console.log("Status: %d", result.CommonMsg.Status);
    console.log("Code: %s", result.CommonMsg.Code);
    console.log("Message: %s", result.CommonMsg.Message);
    console.log("RequestId: %s", result.CommonMsg.RequestId);
  } catch (error) {
    console.log("An Exception was found, which means the client encountered an internal problem when attempting to communicate with OBS, for example, the client was unable to access the network.");
    console.log(error);
  };
};
deleteObject();
```
#### 代码示例二：批量删除多版本对象
本示例用于批量删除examplebucket桶中的objectname1、objectname2、objectname3对象。
```
// 引入obs库
// 使用npm安装
const ObsClient = require("esdk-obs-nodejs");
// 使用源码安装
// var ObsClient = require('./lib/obs');
// 创建ObsClient实例
const obsClient = new ObsClient({
  // 推荐通过环境变量获取AKSK，这里也可以使用其他外部引入方式传入，如果使用硬编码可能会存在泄露风险
  // 您可以登录访问管理控制台获取访问密钥AK/SK，获取方式请参见https://support.huaweicloud.com/usermanual-ca/ca_01_0003.html
  access_key_id: process.env.ACCESS_KEY_ID,
  secret_access_key: process.env.SECRET_ACCESS_KEY,
  // 【可选】如果使用临时AK/SK和SecurityToken访问OBS，同样建议您尽量避免使用硬编码，以降低信息泄露风险。您可以通过环境变量获取访问密钥AK/SK，也可以使用其他外部引入方式传入
  // security_token: process.env.SECURITY_TOKEN,
  // endpoint填写Bucket对应的Endpoint, 这里以华北-北京四为例，其他地区请按实际情况填写
  server: "https://obs.cn-north-4.myhuaweicloud.com",
});
async function deleteObjects() {
  try {
    const params = {
      // 指定存储桶名称
      Bucket: "examplebucket",
      // 指定删除列表
      Objects: [
        { Key: 'objectname1', VersionId: "version1" },
        { Key: 'objectname2', VersionId: "version2" },
        { Key: 'objectname3', VersionId: "version3" }
      ]
    };
    // 批量删除对象
    const result = await obsClient.deleteObjects(params);
    if (result.CommonMsg.Status <= 300) {
      console.log("Delete objects under the bucket(%s) successful!", params.Bucket);
      console.log("RequestId: %s", result.CommonMsg.RequestId);
      // 获取删除成功的对象 
      console.log('Deleteds:');
      for (let i = 0; i < result.InterfaceResult.Deleteds.length; i++) {
        const deleted = result.InterfaceResult.Deleteds[i];
        console.log("Deleted[%d]-Key:%s, VersionId:%s", i, deleted.Key, deleted.VersionId);
      };
      // 获取删除失败的对象 
      console.log('Errors:');
      for (let i = 0; i < result.InterfaceResult.Errors.length; i++) {
        const err = result.InterfaceResult.Errors[i];
        console.log("Errors[%d]-Key:%s, Code:%s", i, err.Key, err.Code);
      };
    };
    console.log("An ObsError was found, which means your request sent to OBS was rejected with an error response.");
    console.log("Status: %d", result.CommonMsg.Status);
    console.log("Code: %s", result.CommonMsg.Code);
    console.log("Message: %s", result.CommonMsg.Message);
    console.log("RequestId: %s", result.CommonMsg.RequestId);
  } catch (error) {
    console.log("An Exception was found, which means the client encountered an internal problem when attempting to communicate with OBS, for example, the client was unable to access the network.");
    console.log(error);
  };
};
deleteObjects();
```