Módulo de sistema de archivos Node.js
Ejemplo
Abra un archivo y envíe el contenido:
var fs = require('fs');
fs.readFile('demofile.txt', 'utf8', function(err, data) {
if (err) throw err;
console.log(data);
});
Definición y uso
El módulo Sistema de archivos proporciona una forma de trabajar con el sistema de archivos de la computadora.
Sintaxis
La sintaxis para incluir el módulo Sistema de archivos en su aplicación:
var fs = require('fs');
Métodos del sistema de archivos
| Method | Description |
|---|---|
| access() | Checks if a user has access to this file or directory |
| accessSync() | Same as access(), but synchronous instead of asynchronous |
| appendFile() | Appends data to a file |
| appendFileSync() | Same as appendFile(), but synchronous instead of asynchronous |
| chmod() | Changes the mode of a file |
| chmodSync() | Same as chmod(), but synchronous instead of asynchronous |
| chown() | Changes the owner of a file |
| chownSync() | Same as chown(), but synchronous instead of asynchronous |
| close() | Closes a file |
| closeSync() | Same as close(), but synchronous instead of asynchronous |
| constants | Returns an object containing constant values for the file system |
| createReadStream() | Returns a new stream object |
| createWriteStream() | Returns a new writeable stream object |
| exists() | Deprecated. Checks if a file or folder exists |
| existsSync() | Same as exists(), but synchronous instead of asynchronous. This method is NOT deprecated |
| fchmod() | Changes the mode of a file |
| fchmodSync() | Same as fchmod(), but synchronous instead of asynchronous |
| fchown() | Changes the owner of a file |
| fchownSync() | Same as fchown(), but synchronous instead of asynchronous |
| fdatasync() | Syncronizes a file with the one stored on the computer |
| fdatasyncSync() | Same as fdatasync(), but synchronous instead of asynchronous |
| fstat() | Returns the status of a file |
| fstatSync() | Same as fstat(), but synchronous instead of asynchronous |
| fsync() | Syncronizes a file with the one stored on the computer |
| fsyncSync() | Same as fsync(), but synchronous instead of asynchronous |
| ftruncated() | Truncates a file |
| ftruncatedSync() | Same as ftruncated(), but synchronous instead of asynchronous |
| futimes() | Change the timestamp of a file |
| futimesSync() | Same as futimes(), but synchronous instead of asynchronous |
| lchmod() | Changes the mode of a file, for Mac OS X |
| lchmodSync() | Same as lchmod(), but synchronous instead of asynchronous |
| lchown() | Changes the owner of a file, for Mac OS X |
| lchownSync() | Same as lchown(), but synchronous instead of asynchronous |
| link() | Makes an addition name for a file. Both the old and the new name may be used |
| linksync() | Same as link(), but synchronous instead of asynchronous |
| lstat() | Returns the status of a file |
| lstatSync() | Same as lstat(), but synchronous instead of asynchronous |
| mkdir() | Makes a new directory |
| mkdirSync() | Same as mkdir(), but synchronous instead of asynchronous |
| mkdtemp() | Makes a new temporary directory |
| mkdtempSync() | Same as mktemp(), but synchronous instead of asynchronous |
| open() | Opens a file |
| openSync() | Same as open(), but synchronous instead of asynchronous |
| read() | Reads the content of a file |
| readdir() | Reads the content of a directory |
| readdirSync() | Same as readdir(), but synchronous instead of asynchronous |
| readFile() | Reads the content of a file |
| readFileSync() | Same as readFile(), but synchronous instead of asynchronous |
| readlink() | Reads the value of a link |
| readlinkSync() | Same as readlink(), but synchronous instead of asynchronous |
| realpath() | Returns the absolute pathname |
| realpathSync() | Same as realpath(), but synchronous instead of asynchronous |
| rename() | Renames a file |
| renameSync() | Same as rename(), but synchronous instead of asynchronous |
| rmdir() | Removes a directory |
| rmdirSync() | Same as rmdir(), but synchronous instead of asynchronous |
| stat() | Returns the status of a file |
| statSync() | Same as stat(), but synchronous instead of asynchronous |
| symlink() | Makes a symbolic name for a file |
| symlinkSync() | Same as symlink(), but synchronous instead of asynchronous |
| truncate() | Truncates a file |
| truncateSync() | Same as truncate(), but synchronous instead of asynchronous |
| unlink() | Removes a link |
| unlinkSync() | Same as unlink(), but synchronous instead of asynchronous |
| unwatchFile() | Stops watching for changes on a filename |
| utimes() | Change the timestamp of a file |
| utimesSync() | Same as utimes(), but synchronous instead of asynchronous |
| watch() | Watch for changes of a filename or directoryname |
| watchFile() | Watch for changes of a filename |
| write() | Writes buffer to a file |
| write() | Writes data to a file |
| writeFile() | Writes data to a file |
| writeFileSync() | Same as writeFile(), but synchronous instead of asynchronous |
| writeSync() | Same as write(); writes buffer to a file synchronous instead of asynchronous |
| writeSync() | Same as write(); writes data to a file synchronous instead of asynchronous |