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Update dev-guide-sample-application-nodejs-mysqljs.md (#16091) #16209

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Jan 19, 2024
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Update dev-guide-sample-application-nodejs-mysqljs.md (#16091) #16209

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ab835f2
Update dev-guide-sample-application-nodejs-mysqljs.md
hey-hoho Jan 10, 2024
d63dfbf
Update wording
lilin90 Jan 18, 2024
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48 changes: 24 additions & 24 deletions develop/dev-guide-sample-application-nodejs-mysqljs.md
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Original file line number Diff line number Diff line change
Expand Up @@ -91,12 +91,12 @@ npm install mysql dotenv --save
6. 编辑 `.env` 文件，按照如下格式设置连接信息，将占位符 `{}` 替换为从连接对话框中复制的参数值：

```dotenv
TIDB_HOST={host}
TIDB_PORT=4000
TIDB_USER={user}
TIDB_PASSWORD={password}
TIDB_DATABASE=test
TIDB_ENABLE_SSL=true
TIDB_HOST='{host}'
TIDB_PORT='4000'
TIDB_USER='{user}'
TIDB_PASSWORD='{password}'
TIDB_DATABASE='test'
TIDB_ENABLE_SSL='true'
```

> **Note**
Expand Down Expand Up @@ -124,13 +124,13 @@ npm install mysql dotenv --save
5. 编辑 `.env` 文件，按照如下格式设置连接信息，将占位符 `{}` 替换为从连接对话框中复制的参数值：

```dotenv
TIDB_HOST={host}
TIDB_PORT=4000
TIDB_USER={user}
TIDB_PASSWORD={password}
TIDB_DATABASE=test
TIDB_ENABLE_SSL=true
TIDB_CA_PATH={downloaded_ssl_ca_path}
TIDB_HOST='{host}'
TIDB_PORT='4000'
TIDB_USER='{user}'
TIDB_PASSWORD='{password}'
TIDB_DATABASE='test'
TIDB_ENABLE_SSL='true'
TIDB_CA_PATH='{downloaded_ssl_ca_path}'
```

> **Note**
Expand All @@ -154,11 +154,11 @@ npm install mysql dotenv --save
2. 编辑 `.env` 文件，按照如下格式设置连接信息，将占位符 `{}` 替换为你的 TiDB 集群的连接参数值：

```dotenv
TIDB_HOST={host}
TIDB_PORT=4000
TIDB_USER=root
TIDB_PASSWORD={password}
TIDB_DATABASE=test
TIDB_HOST='{host}'
TIDB_PORT='4000'
TIDB_USER='root'
TIDB_PASSWORD='{password}'
TIDB_DATABASE='test'
```

3. 保存 `.env` 文件。
Expand Down Expand Up @@ -199,15 +199,15 @@ npm run start
下面的代码使用环境变量中定义的连接选项来建立与 TiDB 集群的连接。

```javascript
// Step 1. Import the 'mysql' and 'dotenv' packages.
// 步骤 1. 导入 'mysql' 和 'dotenv' 依赖包。
import { createConnection } from "mysql";
import dotenv from "dotenv";
import * as fs from "fs";

// Step 2. Load environment variables from .env file to process.env.
// 步骤 2. 将连接参数从 .env 文件中读取到 process.env 中。
dotenv.config();

// Step 3. Create a connection with the TiDB cluster.
// 步骤 3. 创建与 TiDB 集群的连接。
const options = {
host: process.env.TIDB_HOST || '127.0.0.1',
port: process.env.TIDB_PORT || 4000,
Expand All @@ -221,9 +221,9 @@ const options = {
}
const conn = createConnection(options);

// Step 4. Perform some SQL operations...
// 步骤 4. 执行 SQL 语句。

// Step 5. Close the connection.
// 步骤 5. 关闭连接。
conn.end();
```

Expand Down Expand Up @@ -317,4 +317,4 @@ conn.query('DELETE FROM players WHERE id = ?;', [1], (err, ok) => {

- 关于 mysql.js 驱动的更多使用方法，可以参考 [mysql.js 的 GitHub 仓库](https://github.com/mysqljs/mysql)。
- 你可以继续阅读开发者文档的其它章节来获取更多 TiDB 应用开发的最佳实践。例如：[插入数据](/develop/dev-guide-insert-data.md)，[更新数据](/develop/dev-guide-update-data.md)，[删除数据](/develop/dev-guide-delete-data.md)，[单表读取](/develop/dev-guide-get-data-from-single-table.md)，[事务](/develop/dev-guide-transaction-overview.md)，[SQL 性能优化](/develop/dev-guide-optimize-sql-overview.md)等。
- 如果你更倾向于参与课程进行学习，我们也提供专业的 [TiDB 开发者课程](https://cn.pingcap.com/courses-catalog/category/back-end-developer/?utm_source=docs-cn-dev-guide)支持，并在考试后提供相应的[资格认证](https://learn.pingcap.com/learner/certification-center)。
- 如果你更倾向于参与课程进行学习，我们也提供了专业的 [TiDB 开发者课程](https://cn.pingcap.com/courses-catalog/category/back-end-developer/?utm_source=docs-cn-dev-guide)支持，并在考试后提供相应的[资格认证](https://learn.pingcap.com/learner/certification-center)。