JSON methods

Generally we will use JSON for sending data over the network like Rest web service call etc.,

We can see some important methods here.

1. JSON.stringify -  to convert objects into JSON.

2. JSON.parse      -  to convert JSON back into an object.

let student = {
  name: 'Rajini',
  age: 30,
  isAdmin: false,
  courses: ['css', 'js']
};

let json = JSON.stringify(student);

alert(typeof json); // Its String now.

alert(json);
/* JSON-encoded object:
{
  "name": "Rajini",
  "age": 30,
  "isAdmin": false,
  "courses": ["css", "js"]
}
*/

Things to Remember Here:

1. Strings use double quotes. No single quotes or backticks in JSON. So 'Rajini' becomes "Rajini".

2. Object property names are double-quoted also. That’s obligatory. So age:30 becomes "age":30.

3. JSON.stringify can be applied to primitives also.


JSON supported types are:

Objects { ... }
Arrays [ ... ]
Primitives:
strings,
numbers,
boolean values true/false,
null.