Node.js urlObject.hash API

The urlObject.hash API is a built-in feature of Node.js that allows programmers to extract the hash (also known as the fragment identifier) from a URL. The hash is the part of the URL that comes after the "#" character and is commonly used to specify an anchor tag on a web page.

Syntax

The urlObject.hash API can be accessed by importing the url module and using the parse() function to parse the URL. The resulting object will have a hash property that contains the hash portion of the URL.

const url = require('url');
const myUrl = 'https://www.example.com#about';

const parsedUrl = url.parse(myUrl);
console.log(parsedUrl.hash); // #about

Example

The following code snippet demonstrates how to use the urlObject.hash API to extract the hash from a URL and use it to navigate to a specific section of a web page.

const url = require('url');

const myUrl = 'https://www.example.com#about';
const parsedUrl = url.parse(myUrl);

// Find the anchor tag with the ID that matches the hash
const targetElement = document.querySelector(parsedUrl.hash);

// Scroll to the target element
targetElement.scrollIntoView();

In this example, the urlObject.hash API is used to extract the hash (#about) from the URL (https://www.example.com#about). The resulting value is then used to find the anchor tag with the matching ID and scroll the page to that section.

Conclusion

The urlObject.hash API is a simple but useful feature of Node.js that allows programmers to extract the hash from a URL. It can be used to navigate to specific sections of web pages or to extract information about the URL.