path

解决不同操作系统不同路径的同意解决方案

const path = require('path');
//  返回路径中的最后一部分
console.log(path.basename(__dirname));  //  nodej
//  返回当前文件夹之前的目录
console.log(path.dirname(__dirname)); //C:\Users\fengyang\Desktop
//  返回文件的后缀名
console.log(path.extname(__filename));  //  .js
//  返回路径字符串对象
console.log(path.parse(__filename));
/**
 * {
  root: 'C:\\',
  dir: 'C:\\Users\\fengyang\\Desktop\\nodej',
  base: 'path.js',
  ext: '.js',
  name: 'path'
}
 */
//  字符串对象转为路径
let filePath = {
  root: 'C:\\',
  dir: 'C:\\Users\\fengyang\\Desktop\\nodej',
  base: 'path.js',
  ext: '.js',
  name: 'path'
}
console.log(path.format(filePath)); //  C:\Users\fengyang\Desktop\nodej\path.js
//  判断是不是绝路径
let showPath = '\nodej\path.js'
console.log(path.isAbsolute(__filename)); //  true
console.log(path.isAbsolute(__dirname));  //  true
console.log(path.isAbsolute(showPath)); //false
// 路径拼接
console.log(path.join(__dirname, 'buffer.js'));  //  C:\Users\fengyang\Desktop\nodej\buffer.js
//  多级目录嵌套
console.log(path.join(__dirname, 'html', 'js', 'test.js'));  //  C:\Users\fengyang\Desktop\nodej\html\js\test.js