Fun and Colorful Calculator
About this app
A simple and colorful calculator that performs addition, subtraction, multiplication, and division with real-time results.
Fun and Colorful Calculator with Bar Graph Simple Calculator + - * /
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Source
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width,initial-scale=1">
<title>Fun and Colorful Calculator with Bar Graph</title>
<meta name="description" content="A colorful calculator that performs arithmetic operations and displays the result as a bar graph.">
<meta name="keywords" content="calculator, arithmetic, addition, subtraction, multiplication, division, bar graph, visualization">
<!-- Libraries -->
<link href="https://fonts.googleapis.com/css2?family=Roboto:wght@400;700&display=swap" rel="stylesheet">
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" crossorigin="anonymous">
<style>
body {
background: linear-gradient(to right, #6a11cb, #2575fc);
color: white;
font-family: 'Roboto', sans-serif;
}
#main-container {
display: flex;
justify-content: center;
align-items: center;
height: 100vh;
text-align: center;
}
.calculator {
background: rgba(255, 255, 255, 0.1);
padding: 2rem;
border-radius: 10px;
box-shadow: 0 8px 16px rgba(0,0,0,0.3);
}
input[type="number"], input[type="text"] {
border: none;
border-radius: 5px;
padding: 1rem;
margin: 0.5rem 0;
width: 80%;
font-size: 1.2rem;
}
.operations {
margin-top: 1rem;
}
.operation {
width: 45px;
height: 45px;
margin: 0.5rem;
background-color: #f39c12;
border: none;
border-radius: 5px;
color: white;
font-size: 1.5rem;
cursor: pointer;
transition: background 0.3s;
}
.operation:hover {
background-color: #e67e22;
}
#graphContainer {
width: 100%;
display: flex;
justify-content: center;
margin-top: 20px;
}
.bar {
background: #48c9b0;
margin: 0 5px;
transition: height 0.4s;
}
</style>
<script type="text/javascript">
document.addEventListener("DOMContentLoaded", function() {
const input1 = document.getElementById("input1");
const input2 = document.getElementById("input2");
const result = document.getElementById("result");
const operationButtons = document.querySelectorAll(".operation");
const graphContainer = document.getElementById("graphContainer");
function updateGraph(num1, num2, res) {
graphContainer.innerHTML = ''; // Clear previous bars
let maxHeight = Math.max(num1, num2, res) * 4; // Scale height
if (!isNaN(num1) && !isNaN(num2) && !isNaN(res)) {
graphContainer.appendChild(createBar(num1, maxHeight));
graphContainer.appendChild(createBar(num2, maxHeight));
graphContainer.appendChild(createBar(res, maxHeight));
}
}
function createBar(value, maxHeight) {
const bar = document.createElement("div");
bar.className = "bar";
bar.style.height = (value * 4) + 'px'; // Scale the bar height
bar.style.width = '40px';
return bar;
}
operationButtons.forEach(button => {
button.addEventListener("click", function() {
const num1 = parseFloat(input1.value);
const num2 = parseFloat(input2.value);
let res;
if (this.value === "+") {
res = num1 + num2;
} else if (this.value === "-") {
res = num1 - num2;
} else if (this.value === "*") {
res = num1 * num2;
} else if (this.value === "/") {
res = num2 !== 0 ? num1 / num2 : "Cannot divide by zero";
} else {
res = NaN;
}
result.value = isNaN(res) ? "Error" : res;
updateGraph(num1, num2, isNaN(res) ? 0 : res);
});
});
});
</script>
</head>
<body>
<div id="main-container" class="container">
<div class="calculator">
<h1>Simple Calculator</h1>
<input type="number" id="input1" placeholder="Enter first number" />
<input type="number" id="input2" placeholder="Enter second number" />
<input type="text" id="result" placeholder="Result" readOnly />
<div class="operations">
<button class="operation" value="+">+</button>
<button class="operation" value="-">-</button>
<button class="operation" value="*">*</button>
<button class="operation" value="/">/</button>
</div>
<div id="graphContainer"></div>
</div>
</div>
</body>
</html>
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