How to convert an object to string using JavaScript ?

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Given an object and the task is to convert the Object to a String using JavaScript. There are some methods to convert different objects to strings, these are:

Methods to Convert an Object to a String

Using String() Constructor
Using JSON.stringify() Method
Using the plus (+) Operator with string:

Method 1: Using String() Constructor

This method converts the value of an object to a string.

Syntax:

String(object)

Example: In this example, we will use the string() method to convert the objects to a string.

javascript

// Inputs
let bool_to_s1 = Boolean(0);
let bool_to_s2 = Boolean(1);
let num_to_s = 1234;
 
// Display type of first input
console.log( typeof(bool_to_s1));
 
// After converting to string
console.log( typeof(String(bool_to_s1)));
 
// Display type of first input
console.log( typeof(bool_to_s2));
 
// After converting to string
console.log(typeof(String(bool_to_s2)));
 
// Display type of first input
console.log( typeof(num_to_s));
 
// After converting to string
console.log(typeof(String(num_to_s)));

Output

boolean
string
boolean
string
number
string

Method 2: Using JSON.stringify() Method

This method converts the JavaScript object to a string which is needed to send data over the web server.

Syntax:

JSON.stringify(obj)

Example: In this example, we will use JSON.stringify() method for conversion of an object to a string.

javascript

// Input object
let obj_to_str = { 
    name: "GeeksForGeeks", 
    city: "Noida", 
    contact: 2488 
};
 
// Converion to string
let myJSON = JSON.stringify(obj_to_str);
 
// Display output
console.log(myJSON);

Output

{"name":"GeeksForGeeks","city":"Noida","contact":2488}

Method 3: Using the plus (+) Operator with string

By default concatenation operation of a string with any data type value first, and convert the value to string type then concatenate it to string.

Syntax:

"" + object ;

Example: In this method, we will use + operate to change objects to strings.

Javascript

// Input objects
let obj1 = new Object();
let obj2 = { ww : 99 , ss : 22};
 
// Display type of objects before
// and after their conversion
console.log( typeof( obj1 ));
console.log( typeof( '' + obj1));
console.log( typeof( obj2 ));
console.log(typeof( '' + obj2 ));