How to create and write data into a txt text file in Nodejs?

Dung Do Tien Jul 01 2021 215

Hi there, I'm a newbie in Nodejs. 

I have a small project with Node and I want to load data from a database and save it into a .txt text file.

My version of Nodejs is v12.18.3

I've been trying to find some ways to write to a file but with no success. How can I do that?

Have 3 answer(s) found.
  • d

    dang nhat hai long Jul 01 2021

    We have many ways to create and write data in a txt file. I usually:

    const fs = require('fs');
fs.writeFileSync('/tmp/file_name.txt', 'Hey txt file!');

    you also write with non-async:

    const fs = require('fs');
fs.writeFile("/tmp/file_name.txt", "Test txt file", function(err) {
    if(err) {
        return console.log(err);
    }
    console.log("Your file was saved!");
}); 

    I hope it helpful for you!!!

  • V

    Víctor Vázquez Jul 01 2021

    You can use way below, It's non-blocking, writing bits and pieces, not writing the whole file at once:

    var fs = require('fs');
var stream = fs.createWriteStream("your_file.txt");
stream.once('open', function(fd) {
  stream.write("Line data 1 \n");
  stream.write("Line data 2\n");
  stream.write("Line data 3\n");
  stream.end();
});

    And it works for me!

  • M

    Minh Vĩnh Jul 01 2021

    You can try with some lines of code as below:

    fs = require('fs');
fs.writeFile('helloworld.txt', 'Hello World!', function (err) {
    if (err) 
        return console.log(err);
    console.log('Wrote Hello World in file helloworld.txt');
});

    And now you can open file txt and check it!!!

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