How can I edit a .dat file in JavaScript?-CodePudding

I want to be able to:

edit the data of a .dat file on my computer for a website.
pull data from the file to use it later on.

I know a tiny bit about javascript and heard javascript cannot directly edit databases.

Is a .dat file in my computer a database?

I have done a few things in Javascript for websites but I haven't done anything complicated completely myself. I created some websites before and I have a basic understanding of HTML and CSS.

Please phrase your response as simply as possible. Explain the meaning of any complicated but necessary terms.

CodePudding user response：

You need some server-side script to access the filesystem of the server such as PHP or NodeJs...

You can reference this url.

Nodejs example here.

w3school link here.

let fs = require('fs');

Appeding file:

fs.appendFile('mynewfile1.txt', 'Hello content!', function (err) {
  if (err) throw err;
  console.log('Saved!');
});

Delete file:

fs.unlink('mynewfile2.txt', function (err) {
  if (err) throw err;
  console.log('File deleted!');
});

Rename file :

fs.rename('mynewfile1.txt', 'myrenamedfile.txt', function (err) {
  if (err) throw err;
  console.log('File Renamed!');
});

Read file :

fs.readFile('demofile1.html', function(err, data) {
    if (err) throw err;
    console.log(data);
});

CodePudding user response：

You can use PHP server code to resolve your problem.

Here is PHP file I/O example code.

File reading:

<?php
   echo file_get_contents("test.txt");
?>

File writing :

<?php
   echo file_put_contents("test.txt","Hello World. Testing!");
?>