stringify

1var obj = {a: "a", b: "b" /*...*/};
2var string = JSON.stringify(obj);
3// OUTPUT:
4// "{'a':'a', 'b':'b'}"

1JSON.stringify(value)
2JSON.stringify(value, replacer)
3JSON.stringify(value, replacer, space)
4

1let data = {
2  name: "John Smith",
3  age: 30,
4  hobbies: ["Programming", "Video Games"]
5};
6
7// {name:"John Smith",age:30,hobbies:["Programming","Video Games"]}
8let miny = JSON.stringify(data);
9
10// The 4 parameter signifys 4 spaces. You can also use "\t".
11/* {
12 *     name: "John Smith",
13 *     age: 30,
14 *     ...
15 */
16let pretty = JSON.stringify(data, null, 4);

1console.log(JSON.stringify({ x: 5, y: 6 }));
2// expected output: "{"x":5,"y":6}"
3
4console.log(JSON.stringify([new Number(3), new String('false'), new Boolean(false)]));
5// expected output: "[3,"false",false]"
6
7console.log(JSON.stringify({ x: [10, undefined, function(){}, Symbol('')] }));
8// expected output: "{"x":[10,null,null,null]}"
9
10console.log(JSON.stringify(new Date(2006, 0, 2, 15, 4, 5)));
11// expected output: ""2006-01-02T15:04:05.000Z""

1var person={"first_name":"Tony","last_name":"Hawk","age":31};
2var personJSONString=JSON.stringify(person); 

1const myObj = {
2  name: 'Skip',
3  age: 2,
4  favoriteFood: 'Steak'
5};
6
7const myObjStr = JSON.stringify(myObj);
8
9console.log(myObjStr);
10// "{"name":"Skip","age":2,"favoriteFood":"Steak"}"
11
12console.log(JSON.parse(myObjStr));
13// Object {name:"Skip",age:2,favoriteFood:"Steak"}