NodeJs版本:4.4.4

Path模块

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NodeJs提供的Path模块，使得我们可以对文件路径进行简单的操作。

API

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var path = require('path');

var path_str = '\\Users\\Administrator\\Desktop\\event.js';

console.log('文件名带后缀：',path.basename(path_str));

console.log('文件名不带后缀：',path.basename(path_str, '.html'));

console.log('路径分隔符:',path.delimiter);

console.log('环境变量:',process.env.PATH);

console.log('使用分隔符分割的环境变量:',process.env.PATH.split(path.delimiter)) //用path.delimiter分割

console.log('目录分隔符:',path.sep);

console.log('使用目录分隔符分割路径:',path_str.split(path.sep));

console.log('返回文件路径:',path.dirname(path_str));

console.log('获取文件后缀:',path.extname(path_str)); //.html

path_format = path.format({

    root : "\\",

    dir : "\\Users\\Administrator\\Desktop\\",

    base : "event.js",

    ext : ".js",

    name : "file"

});

console.log('格式化路径',path_format);

console.log('判断是否是绝对路径1:',path.isAbsolute(path_str));

console.log('判断是否是绝对路径2:',path.isAbsolute('/test/study/'));

console.log('路径连接',path.join('/Users', 'Administrator', 'Desktop', 'test'));

console.log('输出规范格式的路径',path.normalize('/Users//Administrator//Desktop/'));

console.log('将路径解析成对象',path.parse(path_str));

console.log('路径解析:',path.resolve('d', 'Baidu', '..'));

//路径解析相当于执行了

// cd d && cd Baidu && cd ..

//然后返回执行后所在的路径

文件名带后缀： event.js

文件名不带后缀： event.js

路径分隔符: ;

环境变量: C:\ProgramData\Oracle\Java\javapath;C:\Program Files (x86)\Intel\iCLS Client\;C:\Program Files\Intel\iCLS Client\;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Program Files (x86)\Intel\Intel(R) Management Engine Components\DAL;C:\Program Files\Intel\Intel(R) Management Engine Components\DAL;C:\Program Files (x86)\Intel\Intel(R) Management Engine Components\IPT;C:\Program Files\Intel\Intel(R) Management Engine Components\IPT;C:\Program Files (x86)\NVIDIA Corporation\PhysX\Common;%JAVA_HOME%/bin;C:\Program Files\Java\jdk1.8.0_91\bin;D:\Program Files\nodejs\;C:\Program Files\TortoiseSVN\bin;C:\Program Files\MySQL\MySQL Server 5.5\bin;D:\Program Files\Git\bin;F:\wnmp\php5;c:\Ruby23-x64\bin;C:\Users\Administrator\AppData\Roaming\npm;D:\Program Files (x86)\Microsoft VS Code\bin

使用分隔符分割的环境变量: [ 'C:\\ProgramData\\Oracle\\Java\\javapath',

  'C:\\Program Files (x86)\\Intel\\iCLS Client\\',

  'C:\\Program Files\\Intel\\iCLS Client\\',

  'C:\\Windows\\system32',

  'C:\\Windows',

  'C:\\Windows\\System32\\Wbem',

  'C:\\Windows\\System32\\WindowsPowerShell\\v1.0\\',

  'C:\\Program Files (x86)\\Intel\\Intel(R) Management Engine Components\\DAL',

  'C:\\Program Files\\Intel\\Intel(R) Management Engine Components\\DAL',

  'C:\\Program Files (x86)\\Intel\\Intel(R) Management Engine Components\\IPT',

  'C:\\Program Files\\Intel\\Intel(R) Management Engine Components\\IPT',

  'C:\\Program Files (x86)\\NVIDIA Corporation\\PhysX\\Common',

  '%JAVA_HOME%/bin',

  'C:\\Program Files\\Java\\jdk1.8.0_91\\bin',

  'D:\\Program Files\\nodejs\\',

  'C:\\Program Files\\TortoiseSVN\\bin',

  'C:\\Program Files\\MySQL\\MySQL Server 5.5\\bin',

  'D:\\Program Files\\Git\\bin',

  'F:\\wnmp\\php5',

  'c:\\Ruby23-x64\\bin',

  'C:\\Users\\Administrator\\AppData\\Roaming\\npm',

  'D:\\Program Files (x86)\\Microsoft VS Code\\bin' ]

目录分隔符: \

使用目录分隔符分割路径: [ '', 'Users', 'Administrator', 'Desktop', 'event.js' ]

返回文件路径: \Users\Administrator\Desktop

获取文件后缀: .js

格式化路径 \Users\Administrator\Desktop\event.js

判断是否是绝对路径1: true

判断是否是绝对路径2: true

路径连接 \Users\Administrator\Desktop\test

输出规范格式的路径 \Users\Administrator\Desktop\

将路径解析成对象 { root: '\\',

  dir: '\\Users\\Administrator\\Desktop',

  base: 'event.js',

  ext: '.js',

  name: 'event' }

路径解析: C:\Users\Administrator\Desktop\d