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

1var obj = {name: "Martin", age: 30, country: "United States"};
2 
3// Converting JS object to JSON string
4var json = JSON.stringify(obj);
5 
6console.log(json);
7// Prints: {"name":"Martin","age":30,"country":"United States"} 
8"https://www.tutorialrepublic.com/faq/how-to-convert-js-object-to-json-string.php"

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

1
2const myJSON = JSON.stringify(obj); 

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"}

1var obj = JSON.parse("{no:'u',my:'sql'}");//returnes {no:'u',my:'sql'}