Week 2 Day 3 – Number Analyzer

Project Overview

This project is a JavaScript-based web application that analyzes numbers using loops. It identifies whether numbers are even, odd, and prime, and provides a summary count.

Features

• Takes user input

• Generates numbers from 1 to input

• Identifies:

  • Even numbers
  • Odd numbers
  • Prime numbers

• Displays total counts

• Dynamic UI update

Tech Stack

• HTML5
• CSS3
• JavaScript (Vanilla JS)

How It Works

1. User enters a number

2. Loop runs from 1 to input

3. For each number:

   • Even → i % 2 === 0
   • Odd → else
   • Prime → checked using divisor loop

4. Counters track totals

5. Output displayed dynamically

Key Concepts Used

• for loops
• Nested loops
• Conditional statements
• Prime number logic
• Counters (frequency counting)
• DOM manipulation

Output Example

Input: 5

1 - Odd 2 - Even | Prime 3 - Odd | Prime 4 - Even 5 - Odd | Prime

Total Even Numbers: 2 Total Odd Numbers: 3 Total Prime Numbers: 3

Future Improvements

• Optimize prime check (√n method)
• Add input validation
• Add reset button
• Highlight primes with color

Learning Outcome

• Understanding of loops and nested loops
• Implementation of mathematical logic
• Real-world problem solving using JavaScript
• Efficient use of counters and conditions