Difference between JSON.stringify() and JSON.parse()

Difference between `JSON.stringify()` and `JSON.parse()`

Function	What it does	Input	Output	When to use
`JSON.stringify()`	Converts a JavaScript object/array into a JSON string	Object / Array	String	When sending data to a server or storing it (like in localStorage)
`JSON.parse()`	Converts a JSON string back into a JavaScript object/array	String	Object / Array	When receiving JSON data from a server or reading stored data

<!DOCTYPE html>

<html>

<head>

<title>JSON Example</title>

</head>

<body>

// Example Student Object

var student = {

name: "Sanjay",

age: 23,

className: "10A",

location: "Delhi"

};

console.log("Original Object:", student);

// 1️⃣ Convert object to JSON string (stringify)

var jsonString = JSON.stringify(student);

console.log("After JSON.stringify():", jsonString);

// Output: {"name":"Sanjay","age":23,"className":"10A","location":"Delhi"}

// 2️⃣ Convert JSON string back to object (parse)

var jsonObject = JSON.parse(jsonString);

console.log("After JSON.parse():", jsonObject);

// Output: {name: 'Sanjay', age: 23, className: '10A', location: 'Delhi'}

// ✅ Accessing property after parse

console.log("Student Name:", jsonObject.name);

</script>

</body>

</html>

We start with a JavaScript object → {name: "Sanjay", age: 23, ...}
JSON.stringify(student) converts it to a JSON string:
```
{"name":"Sanjay","age":23,"className":"10A","location":"Delhi"}
```
👉 This is just text — useful for sending across network or storing in DB/localStorage.
JSON.parse(jsonString) converts the string back to an object so we can use it again in code.

⚡ In simple words: