how to write in json files node js code example

Example 1: HOW WRITE AND SAVE JSON FILE IN NODEJS

'use strict';

const fs = require('fs');

let student = { 
    name: 'Mike',
    age: 23, 
    gender: 'Male',
    department: 'English',
    car: 'Honda' 
};
 
let data = JSON.stringify(student, null, 2);

fs.writeFile('student-3.json', data, (err) => {
    if (err) throw err;
    console.log('Data written to file');
});

console.log('This is after the write call');

Example 2: how to use json file in nodejs

D:\NodeJs>node readsync.js
 *START*
Output Content:
 /* content here */
*EXIT*
// Define JSON File
 var fs = require("fs");
 console.log("\n *STARTING* \n");
// Get content from file
 var contents = fs.readFileSync("jsoncontent.json");
// Define to JSON type
 var jsonContent = JSON.parse(contents);
// Get Value from JSON
 console.log("User Name:", jsonContent.username);
 console.log("Email:", jsonContent.email);
 console.log("Password:", jsonContent.password);
log("\n *EXIT* \n");

Example 3: write json file in node js

function writeJsonFile(file, content) {
  let jsonData = JSON.stringify(content)
  fs.writeFileSync(file, jsonData)
}