Node.js urlSearchParams.toString() Method

The urlSearchParams.toString() method is an inbuilt application programming interface of class URLSearchParams within url module which is used to get the object of uri search params object as a string.

Syntax:

const urlSearchParams.toString()

Parameter: This method does not accept any parameter.
Return value: This method returns the object of uri search params object as a string.
Below programs illustrates the use of urlSearchParams.toString() method in Node.js:
Example 1: Filename app.js

javascript

// Node.js program to demonstrate the
// URLSearchParams.toString() method

// Importing the module 'url'
const http = require('url');

// Creating and initializing
// URLSearchParams object
const params = new URLSearchParams();

// Appending value in the object
params.append('A', 'Book');
params.append('B', 'Pen');
params.append('A', 'Pencil');

// Getting string representation
// by using toString() api
const value = params.toString();

// Display the result
console.log("String representation"
      + " of object : " + value);

Run app.js file using the following command:  

node app.js

Output:

String representation of object : A=Book&B=Pen&A=Pencil

Example 2:
Filename app.js

javascript

// Node.js program to demonstrate the
// URLSearchParams.toString() method

// Importing the module 'url'
const http = require('url');

// Creating and initializing
// URLSearchParams object
const params = new URLSearchParams();

// Appending value in the object
params.append('geeks', 'code');
params.append('for', 'eat');
params.append('geeks', 'sleep');

// Getting string representation
// by using toString() api
const value = params.toString();

// Display the result
console.log("String representation"
      + " of object : " + value);

Run app.js file using the following command:  

node app.js

Output:

String representation of object : geeks=code&for=eat&geeks=sleep

Reference: https://nodejs.org/dist/latest-v14.x/docs/api/url.html#url_urlsearchparams_tostring