Node.js v24.13.0 文档

使用方法#>

🌐 Usage

node [options] [V8 options] [script.js | -e "script" | - ] [arguments]

请参阅命令行选项文件以获取更多信息。

🌐 Please see the Command-line options document for more information.

示例#>

🌐 Example

使用 Node.js 编写的 网络服务器 示例，它会响应 'Hello, World!' ：

🌐 An example of a web server written with Node.js which responds with 'Hello, World!':

本文档中的命令以 $ 或 > 开头，以模拟它们在用户终端中出现的方式。不要包含 $ 和 > 字符。它们只是用来显示每个命令的开始。

🌐 Commands in this document start with $ or > to replicate how they would appear in a user's terminal. Do not include the $ and > characters. They are there to show the start of each command.

不以 $ 或 > 字符开头的行显示前一个命令的输出。

🌐 Lines that don't start with $ or > character show the output of the previous command.

首先，确保已下载并安装 Node.js。有关更多安装信息，请参见 通过包管理器安装 Node.js。

🌐 First, make sure to have downloaded and installed Node.js. See Installing Node.js via package manager for further install information.

现在，创建一个名为 projects 的空项目文件夹，然后进入该文件夹。

🌐 Now, create an empty project folder called projects, then navigate into it.

Linux 和 Mac：

🌐 Linux and Mac:

mkdir ~/projects
cd ~/projects 拷贝

Windows CMD：

mkdir %USERPROFILE%\projects
cd %USERPROFILE%\projects 拷贝

Windows PowerShell：

mkdir $env:USERPROFILE\projects
cd $env:USERPROFILE\projects 拷贝

接下来，在 projects 文件夹中创建一个新的源文件，并将其命名为 hello-world.js。

🌐 Next, create a new source file in the projects folder and call it hello-world.js.

在你喜欢的任何文本编辑器中打开 hello-world.js，并粘贴以下内容：

🌐 Open hello-world.js in any preferred text editor and paste in the following content:

const http = require('node:http');

const hostname = '127.0.0.1';
const port = 3000;

const server = http.createServer((req, res) => {
  res.statusCode = 200;
  res.setHeader('Content-Type', 'text/plain');
  res.end('Hello, World!\n');
});

server.listen(port, hostname, () => {
  console.log(`Server running at http://${hostname}:${port}/`);
}); 拷贝

保存文件。然后，在终端窗口中，要运行 hello-world.js 文件，输入：

🌐 Save the file. Then, in the terminal window, to run the hello-world.js file, enter:

node hello-world.js 拷贝

这样的输出应该出现在终端中：

🌐 Output like this should appear in the terminal:

Server running at http://127.0.0.1:3000/ 拷贝

现在，打开任意你喜欢的网页浏览器，然后访问 http://127.0.0.1:3000。

🌐 Now, open any preferred web browser and visit http://127.0.0.1:3000.

如果浏览器显示字符串 Hello, World!，那就说明服务器正在正常工作。

🌐 If the browser displays the string Hello, World!, that indicates the server is working.