Filename: ////usr/share/doc/nodejs/api/synopsis.json

{ "type": "module", "source": "doc/api/synopsis.md", "modules": [ { "textRaw": "Usage and example", "name": "usage_and_example", "introduced_in": "v0.10.0", "miscs": [ { "textRaw": "Usage", "name": "Usage", "introduced_in": "v0.10.0", "type": "misc", "desc": "<p><code>node [options] [V8 options] [script.js | -e \"script\" | - ] [arguments]</code></p>\n<p>Please see the <a href=\"cli.html#options\">Command-line options</a> document for more information.</p>\n<h2>Example</h2>\n<p>An example of a <a href=\"http.html\">web server</a> written with Node.js which responds with\n<code>'Hello, World!'</code>:</p>\n<p>Commands in this document start with <code>$</code> or <code>></code> to replicate how they would\nappear in a user's terminal. Do not include the <code>$</code> and <code>></code> characters. They are\nthere to show the start of each command.</p>\n<p>Lines that don't start with <code>$</code> or <code>></code> character show the output of the previous\ncommand.</p>\n<p>First, make sure to have downloaded and installed Node.js. See\n<a href=\"https://nodejs.org/en/download/package-manager/\">Installing Node.js via package manager</a> for further install information.</p>\n<p>Now, create an empty project folder called <code>projects</code>, then navigate into it.</p>\n<p>Linux and Mac:</p>\n<pre><code class=\"language-console\">$ mkdir ~/projects\n$ cd ~/projects\n</code></pre>\n<p>Windows CMD:</p>\n<pre><code class=\"language-console\">> mkdir %USERPROFILE%\\projects\n> cd %USERPROFILE%\\projects\n</code></pre>\n<p>Windows PowerShell:</p>\n<pre><code class=\"language-console\">> mkdir $env:USERPROFILE\\projects\n> cd $env:USERPROFILE\\projects\n</code></pre>\n<p>Next, create a new source file in the <code>projects</code>\nfolder and call it <code>hello-world.js</code>.</p>\n<p>Open <code>hello-world.js</code> in any preferred text editor and\npaste in the following content:</p>\n<pre><code class=\"language-js\">const http = require('node:http');\n\nconst hostname = '127.0.0.1';\nconst port = 3000;\n\nconst server = http.createServer((req, res) => {\n res.statusCode = 200;\n res.setHeader('Content-Type', 'text/plain');\n res.end('Hello, World!\\n');\n});\n\nserver.listen(port, hostname, () => {\n console.log(`Server running at http://${hostname}:${port}/`);\n});\n</code></pre>\n<p>Save the file, go back to the terminal window, and enter the following command:</p>\n<pre><code class=\"language-console\">$ node hello-world.js\n</code></pre>\n<p>Output like this should appear in the terminal:</p>\n<pre><code class=\"language-console\">Server running at http://127.0.0.1:3000/\n</code></pre>\n<p>Now, open any preferred web browser and visit <code>http://127.0.0.1:3000</code>.</p>\n<p>If the browser displays the string <code>Hello, World!</code>, that indicates\nthe server is working.</p>" } ], "type": "module", "displayName": "Usage and example" } ] }

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