how to encode json in node js code example

Example 1: Javascript object to JSON string

var person={"first_name":"Tony","last_name":"Hawk","age":31};
var personJSONString=JSON.stringify(person);

Example 2: node json stringify

let data = {
  name: "John Smith",
  age: 30,
  hobbies: ["Programming", "Video Games"]
};

// {name:"John Smith",age:30,hobbies:["Programming","Video Games"]}
let miny = JSON.stringify(data);

// The 4 parameter signifys 4 spaces. You can also use "\t".
/* {
 *     name: "John Smith",
 *     age: 30,
 *     ...
 */
let pretty = JSON.stringify(data, null, 4);