Welcome to the website of Davis Fiore

JSON is a data format that stands for Javascript Object Notation. It's used as data interchange protocol between different languages or to create instances of Javascript objects.

It stores data in the key-value format.

: are used to separate a key from a value
, are used to separate items
{} are used to represent objects
[] are used to represent arrays

This is an example of JSON:

var student = {
	"name":"Tim",
	"surname":"Gordon",
	"hobbies": ["football","music","travelling"],
	"showName": function() {
		alert(this.name);
	},
	"locale": {
		"address": "14, Piccadilly Circus",
		"city": "London"
	}
}

student.showName();

A JSON is serialized in a string format when sent on the network and deserialized when received.

JSON.stringify() is used to serialize.
JSON.parse() is used to deserialize.

This is an example:

var student = '{"name":"Tim","surname":"Gordon"}'

var myObjStudent = JSON.parse(student); // Serialize

alert(myObjStudent["name"]); // I'm using the object as associative array

alert(myObjStudent.name); // Other way to read the content

var studentClone = JSON.stringify(myObjStudent); // Deserialize

alert(studentClone);

Note that eval() is not safe to deserialize, because it can execute any Javascript command.