Arrays & Objects

JSON

JSON (JavaScript Object Notation) is the text format used to send data between browsers and servers. It looks like a JavaScript object, but keys must be in double quotes.

const user = { name: "Ali", skills: ["JS", "CSS"] };

const text = JSON.stringify(user);  // object → string
console.log(text);

const back = JSON.parse(text);      // string → object
console.log(back.skills[0]);

Output

{"name":"Ali","skills":["JS","CSS"]}
JS