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NODE 模块 FS-EXTRA

leader 2021年05月25日 编程语言 300 0

fs-extra模块是系统fs模块的扩展,提供了更多便利的 API,并继承了fs模块的 API。

1、复制文件

copy(src, dest, [options], callback)

示例:

var fs = require('fs-extra'); 
 
fs.copy('/tmp/myfile', '/tmp/mynewfile', function(err) { 
  if (err) return console.error(err) 
  console.log("success!") 
}); 
 
fs.copy('/tmp/mydir', '/tmp/mynewdir', function(err) { 
  if (err) return console.error(err) 
  console.log("success!") 
});

2、创建文件、目录

ensureFile(file, callback) 
createFile(file, callback) 
createFileSync(file), 
ensureFileSync(file) 
ensureDir(dir, callback) 
ensureDirSync(dir)

示例:

var fs = require('fs-extra'); 
 
var file = '/tmp/this/path/does/not/exist/file.txt' 
fs.ensureFile(file, function(err) { 
  console.log(err) // => null  
  //file has now been created, including the directory it is to be placed in  
}); 
 
var dir = '/tmp/this/path/does/not/exist' 
fs.ensureDir(dir, function(err) { 
  console.log(err) // => null  
  //dir has now been created, including the directory it is to be placed in  
});

3、移动文件、目录

move(src, dest, [options], callback)

示例:

var fs = require('fs-extra') 
 
fs.move('/tmp/somefile', '/tmp/does/not/exist/yet/somefile', function(err) { 
  if (err) return console.error(err) 
  console.log("success!") 
})

4、写入文件

outputFile(file, data, callback)

示例:

var fs = require('fs-extra') 
var file = '/tmp/this/path/does/not/exist/file.txt' 
 
fs.outputFile(file, 'hello!', function(err) { 
  console.log(err) // => null  
 
  fs.readFile(file, 'utf8', function(err, data) { 
    console.log(data) // => hello!  
  }) 
})

5、删除文件、目录

remove(dir, callback)

示例:

var fs = require('fs-extra') 
 
fs.remove('/tmp/myfile', function(err) { 
  if (err) return console.error(err) 
 
  console.log("success!") 
}) 
 
fs.removeSync('/home/jprichardson')


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