Objective:

Build a simple web page from scratch that utilizes D$3.$js to create interactive div elements. Each div should visually represent a data point and change its appearance when the user hovers over it$.$ This challenge will test your ability to manipulate the DOM using D$3.$js$,$ applying basic interactivity concepts.

Tasks:

Setup the HTML Structure:

Create an HTML file with the basic structure $($doctype$,$ head, body$).$

Include the D$3.$js library by adding its tag in the head section.

Add a tag linking to your external JS file where you will write your D$3$ code.

Design the CSS:

In the head section of your HTML file, include a tag.

Define styles for the div elements that will be used to represent data points $($e$.$g$.,$ height, width, initial background color$).$

Implement the JavaScript:

Create an external JavaScript file.

Write a function that initializes your page. This should include creating div elements to represent data points and attaching interactive behaviors to these elements using D$3.$js$.$

Attach event listeners for "mouseover" and "mouseout" events to change the elements' styles when hovered over and revert these styles when the mouse moves away.

Add Interactivity:

On "mouseover", change the div $\text{'}$s background color to a different color $($e$.$g$.,$ "firebrick"$).$

On "mouseout", revert the div $\text{'}$s background color to its original state.

Requirements:

The web page must dynamically create several div elements to act as visual data points.

Apply D$3.$js methods to bind event listeners to these div elements for interactivity.

Do not use any external libraries other than D$3.$js$.$

Ensure your code is well$-$organized, commented, and demonstrates good coding practices.

Deliverables:

HTML file: Contains your webpage structure, D$3.$js script inclusion, styles, and linkage to your JavaScript file.

JavaScript file: Implements the creation and interactivity of div elements using D$3.$js$.$

This challenge encourages you to apply basic D$3.$js concepts for DOM manipulation and event handling to create a simple yet interactive web visualization. It is an opportunity to explore how D$3.$js can be used to enhance the interactivity of HTML elements based on user actions.