Instructions for the fs.rename method in node.js

method description:

Modify the file name to change the file location.

syntax:

fs.rename(oldPath, newPath, [callback(err)])

Since this method belongs to the fs module, it is necessary to introduce the fs module (var fs= require(" fs "))

before using it

receive parameters:

oldPath                          

newPath                       new path

The callback                         callback passes an err exception parameter

example:

// Rename with files in the same directory: 

var fs = require('fs');

fs.rename('125.txt','126.txt', function(err){

 if(err){

  throw err;

 }

 console.log('done!');

})

 

// Rename files under different paths  +  Move :(new path must already exist, no path will return exception) 

var fs = require('fs');

fs.rename('125.txt','new/126.txt', function(err){

 if(err){

  throw err;

 }

 console.log('done!');

})

source code:

fs.rename = function(oldPath, newPath, callback) {

  callback = makeCallback(callback);

  if (!nullCheck(oldPath, callback)) return;

  if (!nullCheck(newPath, callback)) return;

  binding.rename(pathModule._makeLong(oldPath),

                 pathModule._makeLong(newPath),

                 callback);

};