How to make a calculator using HTML Java script and CSS | CodeXNebula
🔸How to make calculator with html javascript CSS without coding 😅
🔸Calculator Using HTML CSS and JavaScript | Source Code
🔸How to Make a Calculator in HTML CSS JavaScript
🔸Simple Calculator Project in HTML CSS JavaScript
🔸HTML CSS JavaScript Calculator with Source Code
🔸Calculator Using HTML CSS JavaScript
✨ Welcome to CodeXNebula!
In this project video, I’m sharing a Dark Mode Calculator built using HTML, CSS & JavaScript.
👉 Full Source Code is given below so you can copy, edit & try it yourself.
This project is a perfect beginner-friendly web development exercise that helps you practice HTML, CSS, and JavaScript together in a real project.
🔹 What This Project Is About
🚀 A simple yet powerful Calculator project
🎨 Built with HTML (structure), CSS (design), JavaScript (functionality)
🌙 Features a Dark Mode theme with glowing display
🖥 Works on both desktop & mobile browsers
🎯 Perfect for beginners learning web development and building portfolio projects
🔹 Why Build a Calculator?
📚 Combines the 3 core web skills:
HTML → create layouts (buttons, display, structure)
CSS → style with Grid, Flexbox, colors, hover effects
JavaScript → add interactivity (button clicks, calculations)
🔹 Project Features
✅ Sleek dark mode design with glowing green display
✅ Buttons include → 0–9, +, −, ×, ÷, %, AC, DEL, ., =
✅ Smooth hover animations for better UX
✅ Responsive layout → works on any screen size
🔹 How to Try This Project
1. 📂 Create three files → index.html, style.css, script.js
2. 📝 Copy the code from below into respective files
3. 🌍 Open index.html in your browser
4. 🎉 Enjoy your fully working calculator!
5. ✨ Customize colors, styles, or add advanced functions
🔹 Source Code
💻 index.html
HTML
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Calculator</title>
<link rel="stylesheet" href="style.css">
</head>
<body>
<div class="calculator">
<div id="display">0</div>
<div class="buttons">
<button onclick="clearDisplay()">AC</button>
<button onclick="deleteChar()">DEL</button>
<button onclick="append('%')">%</button>
<button onclick="append('/')">÷</button>
<button onclick="append('7')">7</button>
<button onclick="append('8')">8</button>
<button onclick="append('9')">9</button>
<button onclick="append('*')">×</button>
<button onclick="append('4')">4</button>
<button onclick="append('5')">5</button>
<button onclick="append('6')">6</button>
<button onclick="append('-')">−</button>
<button onclick="append('1')">1</button>
<button onclick="append('2')">2</button>
<button onclick="append('3')">3</button>
<button onclick="append('+')">+</button>
<button onclick="append('0')">0</button>
<button onclick="append('.')">.</button>
<button onclick="calculate()">=</button>
</div>
</div>
<script src="script.js"></script>
</body>
</html>
💻 style.css
CSS
body{display:flex;justify-content:center;align-items:center;height:100vh;background:#000;font-family:'Courier New',monospace;}
.calculator{background:#1a1a1a;padding:20px;border-radius:15px;box-shadow:0 0 25px rgba(0,255,100,.2);}
#display{background:#000;color:#0f6;font-size:2rem;padding:15px;border-radius:8px;text-align:right;margin-bottom:15px;}
.buttons{display:grid;grid-template-columns:repeat(4,70px);gap:10px;}
button{padding:20px;border:none;border-radius:8px;font-size:1.2rem;cursor:pointer;transition:.2s;background:#333;color:#fff;}
button:hover{box-shadow:0 0 10px #0f6;transform:scale(1.05);}
💻 script.js
JavaScript
let d=document.getElementById("display");
function append(v){d.innerText=d.innerText==="0"?v:d.innerText+v;}
function clearDisplay(){d.innerText="0";}
function deleteChar(){d.innerText=d.innerText.slice(0,-1)||"0";}
function calculate(){try{d.innerText=eval(d.innerText)}catch{d.innerText="Error";}}
🔹 Conclusion
⚡ This Calculator Project is the perfect way to start your coding journey.
🔥 Copy the source code, experiment, and customize it.
💡 The more you practice, the faster you’ll grow as a developer.
👉 If you like this project:
👍 Like this video
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📢 Share with your friends who are learning web development
🔖 Hashtags
#HTML #CSS #javascript #calculator #webdevelopment #frontend #javascripttutorial #codingproject #learntocode #programming
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