Code implementation of file directory operations in the file system in Node.js

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File/directory operations

(1) Determine whether the file/directory exists

fs.exists( )

## fs.access()

fs.exitesSync()

(2) Delete files/directories

                                                                                                                                           (3) Rename files/directories

Example:Directory fs/fs-2.js:

// 导入模块
  const fs = require('fs');
  // 判断文件/目录 是否存在 access()
  fs.access('../fs/fs-1.js', function (err) {
     if (err) {
        console.log("文件或目录不存在！");
     } else {
        console.log("文件或目录存在！");
     }
  });
  // 重命名同上方法  删除
  // 查看文件或者目录的状态
  fs.stat('../fs/fs-1.js',function (err,stat) {
    console.log(stat.ctime);//创建时间2018-07-27T06:39:57.719Z
    console.log(stat.mtime);//修改时间2018-07-27T06:39:57.683Z
    console.log(stat.atime);//访问时间2018-07-27T06:39:57.682Z
    console.log(stat.isFile());//是否是文件 输出true
    console.log(stat.isDirectory());//是否是目录输出false
  })

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Detailed introduction to global objects in Node.js

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