Node.js _dirname & path All In One

file path

相对路径

绝对路径

https://nodejs.org/docs/latest/api/globals.html#globals_dirname

https://nodejs.org/docs/latest/api/modules.html#modules_dirname

const log = console.log;

// log(`__dirname`, __dirname);

This is the same as the path.dirname() of the __filename.

Example: running node example.js from /Users/mjr

console.log(__dirname);
// Prints: /Users/mjr

console.log(path.dirname(__filename));
// Prints: /Users/mjr

Running node example.js from /Users/mjr

console.log(__filename);
// Prints: /Users/mjr/example.js

console.log(__dirname);
// Prints: /Users/mjr

https://nodejs.org/api/path.html

https://github.com/nodejs/node/blob/v15.2.0/lib/path.js

const log = console.log;

const path = require('path');

// path.dirname(file_path);

let directories = path.dirname('/Users/xgqfrms/app.js');

log(directories);
// /Users/xgqfrms

1. Express.js / Koa.js

2. React SSR

3. Vue SSR

4. Electron app

   "use strict";

   /**
   *

   • @author xgqfrms
   • @license MIT
   • @copyright xgqfrms
   • @created 2020-11-01
   • @modified
     *
   • @description
   • @difficulty Easy Medium Hard
   • @complexity O(n)
   • @augments
   • @example
   • @link
   • @solutions
     *
   • @best_solutions
     *
     */

   const log = console.log;

   const path = require('path');
   // path.dirname(file_path);

   // log(__dirname, __dirname);

   const { app, BrowserWindow } = require('electron')

   function createWindow () {
   const win = new BrowserWindow({
   width: 1000,
   height: 700,
   webPreferences: {
   nodeIntegration: true
   }
   })

   // win.loadFile('index.html');
   // win.loadFile(__dirname + '/index.html');
   // relative path 拼接
   // win.loadFile(__dirname.replace(src, ) + '/public/index.html'); let directories = path.dirname('index.js'); log(`directories =`, directories); // directories = ., . 即指项目的 root path // win.loadFile(directories.replace(`src`,) + '/public/index.html');
   win.loadFile('./public/index.html');
   // 打开 debug 模式
   win.webContents.openDevTools();
   }

   app.whenReady().then(createWindow)

   app.on('window-all-closed', () => {
   if (process.platform !== 'darwin') {
   app.quit()
   }
   })

   app.on('activate', () => {
   if (BrowserWindow.getAllWindows().length === 0) {
   createWindow()
   }
   })

https://stackoverflow.com/questions/8131344/what-is-the-difference-between-dirname-and-in-node-js

difference between __dirname and ./ in Node.js

https://www.geeksforgeeks.org/difference-between-__dirname-and-in-node-js/

https://www.w3schools.com/nodejs/met_path_dirname.asp

process.cwd()

https://coderrocketfuel.com/article/get-the-path-of-the-current-working-directory-in-node-js

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