How to convert an object to string using JavaScript?

Below are the methods to convert different objects to string.

Method 1: Using the function String() The String() function converts the value of an object to a string. Syntax:

String(object)

Parameter:

• JavaScript Object

Example :

javascript

<script>
var bool_to_s1 = Boolean(0);
var bool_to_s2 = Boolean(1);
var num_to_s = 1234;

document.write( typeof( bool_to_s1)+"<br>");

document.write( typeof(String( bool_to_s1))+ "<br>");

document.write( typeof( bool_to_s2)+ "<br>");

document.write(typeof(String( bool_to_s2))+ "<br>");

document.write( typeof( num_to_s)+ "<br>");

document.write(typeof(String( num_to_s))+ "<br>");
</script>

Output:

boolean
string
boolean
string
number
string

Method 2:Using JSON.stringify() JSON.stringify() converts the javascript object to string which is needed to send data over web server. Syntax:

 JSON.stringify(obj)

Parameter:

• Can be object, array

Example:

javascript

<script>
var obj_to_str =
{ name: "GeeksForGeeks", city: "Noida", contact:2488 };
var myJSON = JSON.stringify(obj_to_str);
document.write(myJSON)
</script>

Output:

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

More about JSON.stringify()

Method 3: Using plus (+) operator with string by default concatenation operation of string with any data type value JavaScript first convert the value to string type then concatenate it to string. Syntax: 

"" + object ; 

Example#:

Javascript

var obj1 = new Object();
var obj2 = { ww : 99 , ss : 22};


console.log( typeof( obj1 ));

console.log( typeof( '' + obj1));

console.log( typeof( obj2 ));

console.log(typeof( '' + obj2 ));

Output:

object
string
object
string