JAVASCRIPT

writing to file in node js

const fs = require('fs')

const content = 'Some content!'

try {
  fs.writeFileSync('/Users/joe/test.txt', content)
  //file written successfully
} catch (err) {
  console.error(err)
}

write files in Node.js

var fs = require('fs');  
var txt = '
' + tkn_psid_id + ':' + assetUrl;
var folderName = '/duplicates/bugging/videobug/' + tkn_psid_id + '.txt';
fs.appendFile(folderName, txt, function (err) {
       if (err) {
                console.log('Append Error');
           } else {
                   console.log('DuplicateFolder' + folder);
            }
      });

how to write to a file with javascript without nodejs

function convertToJSON() {
  var firstname = document.getElementById('firstname').value;
  var lastname = document.getElementById('lastname').value;
  var email = document.getElementById('email').value;

  var jsonObject = {
    "FirstName": firstname,
    "LastName": lastname,
    "email": email
  }

  document.getElementById('output').value = JSON.stringify(jsonObject)
}

function saveToFile() {
  convertToJSON();
  var jsonObjectAsString = document.getElementById('output').value;

  var blob = new Blob([jsonObjectAsString], {
    //type: 'application/json'
    type: 'octet/stream'
  });
  console.log(blob);

  var anchor = document.createElement('a')
  anchor.download = "user.json";
  anchor.href = window.URL.createObjectURL(blob);
  anchor.innerHTML = "download"
  anchor.click();

  console.log(anchor);

  document.getElementById('output').append(anchor)


}