Browser History Tracker: A Simplified Version

Understanding how browser history works can be intriguing. Browsers are quite efficient at keeping a tab of our actions. Today, we'll create a simplified model of a browser history tracker. This tracker will maintain the sequence of visited pages (URLs) and allow us to navigate forward and backward in history. 🌐

Class Structure and Initial Setup

Let's begin by laying down the groundwork for our Browser History class. We'll need two main properties:

1. History Array: To keep track of all the visited URLs.
2. Pointer: An integer that points to the current URL we're viewing in the history array.

Here's the initial class setup with a constructor:

1class BrowserHistory {
2    constructor(url) {
3        this.history = [];
4        this.pointer = -1;
5        if (url !== undefined) {
6            this.history.push(url);
7        }
8    }
9}

What's happening here?

• The constructor initializes an empty history array and sets the pointer to -1.
• If a URL is provided during the instantiation, it gets added to the history.