Fun Beginner Projects

Wow, you’ve made it through the JavaScript basics—time to celebrate by building something awesome! 🎉 These three mini-projects—Digital Dice Roller, Random Joke Generator, and Simple Calculator—will put your skills to work. You’ll use variables, functions, arrays, objects, and loops, plus a touch of HTML and CSS to make them interactive on a webpage. Each project is beginner-friendly, includes full code, and runs in your browser. Let’s create some magic! 🪄

Project 1: Digital Dice Roller 🎲

Roll a virtual die (1–6) with a button click. Perfect for practicing random numbers and DOM updates!

What You’ll Learn

Generate random numbers with Math.random().
Update the webpage with DOM manipulation.
Handle button clicks with event listeners.

The Code

Create three files: index.html, style.css, dice.js.

index.html:

<!DOCTYPE html>
<html>
<head>
    <title>Digital Dice Roller</title>
    <link rel="stylesheet" href="style.css">
</head>
<body>
    <h1>🎲 Digital Dice Roller</h1>
    <p>Result: <span id="result">Click to roll!</span></p>
    <button onclick="rollDice()">Roll the Dice!</button>
    <script src="dice.js"></script>
</body>
</html>

style.css:

body {
    font-family: Arial, sans-serif;
    text-align: center;
    padding: 20px;
    background-color: #f0f0f0;
}
h1 {
    color: #333;
}
button {
    padding: 10px 20px;
    font-size: 16px;
    cursor: pointer;
    background-color: #4CAF50;
    color: white;
    border: none;
    border-radius: 5px;
}
button:hover {
    background-color: #45a049;
}
#result {
    font-size: 24px;
    color: #d32f2f;
}

dice.js:

function rollDice() {
    let result = Math.floor(Math.random() * 6) + 1; // Random 1-6
    document.getElementById("result").textContent = result;
}

How It Works

Math.random() gives a number between 0 (inclusive) and 1 (exclusive).
Math.floor(Math.random() * 6) gives 0–5, so +1 makes it 1–6.
document.getElementById("result") finds the <span> and updates its text with .textContent.
The button’s onclick="rollDice()" calls the function on click.

Try It

Save the files in a folder (e.g., dice-roller).
Open index.html in a browser.
Click the button to roll—see the number change!
Play: Add emoji dice faces (e.g., ⚀ for 1) using an array and if statements.

Level Up

Store the last 5 rolls in an array and display them below the result!

Project 2: Random Joke Generator 😂

Click a button to get a random joke from a list. Great for practicing arrays and functions!

What You’ll Learn

Store data in arrays and pick random items.
Use functions to organize code.
Update the DOM dynamically.

The Code

Create index.html, style.css, joke.js.

index.html:

<!DOCTYPE html>
<html>
<head>
    <title>Random Joke Generator</title>
    <link rel="stylesheet" href="style.css">
</head>
<body>
    <h1>😂 Random Joke Generator</h1>
    <p id="joke">Click for a laugh!</p>
    <button onclick="tellJoke()">Get Joke</button>
    <script src="joke.js"></script>
</ Saul
</body>
</html>

style.css:

body {
    font-family: Arial, sans-serif;
    text-align: center;
    padding: 20px;
    background-color: #f0f0f0;
}
h1 {
    color: #333;
}
#joke {
    font-size: 20px;
    margin: 20px;
}
button {
    padding: 10px 20px;
    font-size: 16px;
    cursor: pointer;
    background-color: #2196F3;
    color: white;
    border: none;
    border-radius: 5px;
}
button:hover {
    background-color: #1976D2;
}

joke.js:

const jokes = [
    "Why did the scarecrow become a coder? He was outstanding in his field! 🌾",
    "What do you call a dinosaur that codes? A Code-a-saurus! 🦖",
    "Why don’t programmers prefer dark mode? The light attracts bugs. 🐛",
    "What’s a coder’s favorite game? Among Us—ejecting bugs from the codebase! 🚀",
    "Why was the JavaScript code sad? It had too many undefined feelings. 😢"
];

function tellJoke() {
    const index = Math.floor(Math.random() * jokes.length);
    document.getElementById("joke").textContent = jokes[index];
}

How It Works

jokes is an array of funny strings.
Math.random() * jokes.length picks a random index (0 to length-1).
document.getElementById("joke") updates the <p> with the chosen joke.
Button click triggers tellJoke().

Try It

Save files in a folder (e.g., joke-generator).
Open index.html in a browser.
Click for random jokes—laugh away!
Play: Add a “Next Joke” button or style jokes differently based on length.

Level Up

Use an object for each joke with setup and punchline, showing them separately with a delay!

Project 3: Simple Calculator 🧮

A basic calculator for addition and subtraction with user input. Perfect for combining inputs, functions, and DOM.

What You’ll Learn

Handle user input from forms.
Use objects to organize operations.
Update the DOM with results.

The Code

Create index.html, style.css, calc.js.

index.html:

<!DOCTYPE html>
<html>
<head>
    <title>Simple Calculator</title>
    <link rel="stylesheet" href="style.css">
</head>
<body>
    <h1>🧮 Simple Calculator</h1>
    <input type="number" id="num1" placeholder="Enter first number">
    <select id="operation">
        <option value="add">+</option>
        <option value="subtract">-</option>
    </select>
    <input type="number" id="num2" placeholder="Enter second number">
    <button onclick="calculate()">Calculate</button>
    <p>Result: <span id="result">0</span></p>
    <script src="calc.js"></script>
</body>
</html>

style.css:

body {
    font-family: Arial, sans-serif;
    text-align: center;
    padding: 20px;
    background-color: #f0f0f0;
}
h1 {
    color: #333;
}
input, select {
    padding: 8px;
    margin: 5px;
    font-size: 16px;
}
button {
    padding: 10px 20px;
    font-size: 16px;
    cursor: pointer;
    background-color: #FF9800;
    color: white;
    border: none;
    border-radius: 5px;
}
button:hover {
    background-color: #F57C00;
}
#result {
    font-size: 24px;
    color: #388E3C;
}

calc.js:

const operations = {
    add: (a, b) => a + b,
    subtract: (a, b) => a - b
};

function calculate() {
    const num1 = Number(document.getElementById("num1").value);
    const num2 = Number(document.getElementById("num2").value);
    const op = document.getElementById("operation").value;
    if (isNaN(num1) || isNaN(num2)) {
        document.getElementById("result").textContent = "Enter valid numbers!";
        return;
    }
    const result = operations[op](num1, num2);
    document.getElementById("result").textContent = result;
}

How It Works

<input type="number"> ensures number inputs.
operations object maps operation names to arrow functions.
Number() converts input strings to numbers.
Checks for isNaN to avoid invalid inputs.
Updates <span id="result"> with the answer.

Try It

Save files in a folder (e.g., calculator).
Open index.html in a browser.
Enterterasect numbers, pick an operation, calculate!
Play: Add multiplication or division to operations.

Level Up

Add error styling (red for invalid inputs) or a history of calculations!

Input Safety

Always validate inputs (e.g., isNaN) to prevent crashes.

Questions? Join our GitHub Discussions.

Project 1: Digital Dice Roller 🎲​

What You’ll Learn​

The Code​

How It Works​

Try It​

Project 2: Random Joke Generator 😂​

What You’ll Learn​

The Code​

How It Works​

Try It​

Project 3: Simple Calculator 🧮​

What You’ll Learn​

The Code​

How It Works​

Try It​

Project 1: Digital Dice Roller 🎲

What You’ll Learn

The Code

How It Works

Try It

Project 2: Random Joke Generator 😂

What You’ll Learn

The Code

How It Works

Try It

Project 3: Simple Calculator 🧮

What You’ll Learn

The Code

How It Works

Try It