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🌐 URL Module in Node.js

📌 What is URL?

What is a URL?

  • A URL (Uniform Resource Locator) is the address of a unique resource on the internet.
  • It is used by browsers to retrieve resources such as HTML pages, CSS files, images, etc.
  • Each valid URL points to a unique resource.

Hash Sign and Fragment

  • A hash sign (#) in a URL is referred to as a fragment.
  • URL fragments historically set the browser's scroll position to a predefined location on a page.
  • If a URL refers to a document, the fragment refers to a specific subsection.

The Built-in URL Module in Node.js

  • The URL module splits a web address into readable parts.
  • It provides utilities for parsing and resolving URLs.
  • Parsing converts an unstructured string into a structured object that's easier to work with.

📝 Example 1 - Parse a Static URL

Node.js Environment
RUNTIME ACTIVE
const url = require('url');

// Static URL
var addr = 'https://www.example.com/category/search?name=CodingsPoints&age=50#section1';

const myURL = url.parse(addr, true);
console.log(myURL);
Terminal Output
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📝 Example 2 - Access URL Parts

Node.js Environment
RUNTIME ACTIVE
const url = require('url');

// Static URL
var addr = 'https://www.example.com/category/search?name=CodingsPoints&age=50#section1';

const myURL = url.parse(addr, true);
console.log(myURL.protocol);
console.log(myURL.host);
console.log(myURL.hash);
console.log(myURL.search);
console.log(myURL.pathname);
Terminal Output
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📝 Example 3 - Log Request URL in Server

Node.js Environment
RUNTIME ACTIVE
const url = require('url');
const http = require('http');

http.createServer((req, res) => {
  res.write('Response From Server..Codings Points');
  console.log(req.url);
  res.end();
}).listen(3000, "localhost", () => {
  console.log("Server Running At http://localhost:3000");
});
Terminal Output
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📝 Example 4 - Parse Request URL in Server

Node.js Environment
RUNTIME ACTIVE
const url = require('url');
const http = require('http');

http.createServer((req, res) => {
  const myURL = url.parse(req.url, true);
  res.write('Response From Server..Codings Points');

  console.log(myURL.search);
  console.log(myURL.pathname);

  res.end();
}).listen(3000, "localhost", () => {
  console.log("Server Running At http://localhost:3000");
});
Terminal Output
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Keep Going!Routing in Node.js