Node.js Parse URL

Node.js URL ParsingIn this tutorial, we will learn how to parse a URL or break down a URL into readable parts in Node.js, and use the built-in Node.js URL module to extract search parameters.

To parse a URL in Node.js: Use the url module, and with the help of parsing and query functions, you can extract all components of the URL.

Node.js URL Parsing – Step-by-Step Guide

This is a step-by-step guide on how to parse a URL into readable parts in Node.js and extract search parameters using the built-in Node.js URL module.

• Step1Use the URL module

  var url = require(‘url‘);

• The2Step: Bring the URL into the variable. The following is an example URL that we will analyze.

  var address = ‘http://localhost:8080/index.php?type=page&action=update&id=5221‘;

• Step3Use the parsing function to parse the website address.

  var q = url.parse(address,true);

• Step4: Use dot notation to extract HOST, PATHNAME, and SEARCH strings.

  q.host q.pathname q.search

• Step5: Use query functionality to parse URL search parameters.

  var qdata = q.query;

• The6Step: Access Search

  qdata.type qdata.action qdata.id

Complete Node.js program that can parse URLs into readable parts in Node.js

　
//　Include the URL module
var url = require('url');　
var address = 'http://localhost:8080/index.php?type=page&action=update&id=5221';　
var q = url.parse(address, true);　
　
console.log(q.host);　//Returns 'localhost:8080'
console.log(q.pathname);　//Returns'/index.php'
console.log(q.search);　//returns '?type=page&action=update&id=5221'
　
var qdata = q.query;　//　Returns an object: {Type: Page, Operation: 'update', id = '5221}
console.log(qdata.type);　//Returns "Page"
console.log(qdata.action);　//Returns "Update"
console.log(qdata.id);　//Returns "　5221"

Terminal Output

$ node urlParsingExample.js　
localhost:8080
/index.php
　?type=page&action=update&id=5221
page
update
5221

Summary:

In this Node.js tutorial–Parse URL inWe learned how to use the built-in Node.js URL module to parse or split URLs into readable parts in Node.js. And extract the host, pathname, search, and search parameters.