javascript - Copy file from one directory to another

Question

How could I use javascript to copy C:\folderA\myfile.txt to C:\folderB\myfile.txt? I also have to check to make sure that myfile.txt does not already exist in folderB. And finally I have to then rename the new file from myfile.txt to myfile.bak.

I know javascript can't really be used on a local file system, but if it could be, how would I write this code as simply as possible?

Is this server-side JavaScript, i.e. can you use node.js (and the fs module) or do you need to run this from a client browser? — Rup
– Rup, Commented Aug 15, 2018 at 16:21
I'm not familiar enough with node.js. I basically have to just write it in regular javascript and in a client browser. — user2051533
– user2051533, Commented Aug 15, 2018 at 16:24

Nuwan Attanayake · Accepted Answer · 2018-08-15 17:14:17Z

20

in browser side you cannot access local system files.But in server side you could do it as follows.

//copyfile.js
const fs = require('fs');

// destination will be created or overwritten by default.
fs.copyFile('C:\folderA\myfile.txt', 'C:\folderB\myfile.txt', (err) => {
  if (err) throw err;
  console.log('File was copied to destination');
});

nodejs has to be installed on your server and then run above script as follows

node copyfile.js

answered Aug 15, 2018 at 17:14

Nuwan Attanayake

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1 Comment

Anderson Green Over a year ago

It is possible to access local system files in browsers that support the File System Access API.

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