Scientific Calculator for Secondary Students
About this app
A scientific calculator designed for secondary students to perform complex calculations.
Scientific Calculator for Secondary Students 7 8 9 + 4 5 6 - 1 2 3 * 0 . C =
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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>Scientific Calculator for Secondary Students</title>
<meta name="description" content="A scientific calculator designed for secondary students to perform complex calculations.">
<meta name="keywords" content="scientific calculator, secondary students, math, calculations">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.6.0/jquery.min.js"></script>
<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.0.2/dist/css/bootstrap.min.css" rel="stylesheet"
integrity="sha384-EVSTQN3/azprG1Anm3QDgpJLIm9Nao0Yz1ztcQTwFspd3yD65VohhpuuCOmLASjC" crossorigin="anonymous">
<link href="https://stackpath.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css" rel="stylesheet">
<link href="https://fonts.googleapis.com/css?family=Roboto:400,700" rel="stylesheet">
<script type="text/javascript">
try {
// App Javascript Goes Here. Place your entire script content inside the try block for error handling.
// This will run when the DOM is ready.
document.addEventListener("DOMContentLoaded", function() {
// Calculator functionality goes here
// Function to handle button click events
function handleButtonClick(button) {
var input = document.getElementById("input");
var buttonValue = button.value;
if (buttonValue === "clear") {
// Clear the input
input.value = "";
} else if (buttonValue === "calculate") {
// Evaluate the expression
var expression = input.value;
try {
var result = eval(expression);
input.value = result;
} catch (error) {
input.value = "Invalid Expression";
}
} else {
// Append the button value to the input
input.value += buttonValue;
}
}
// Add event listener to all buttons
var buttons = document.getElementsByClassName("calculator-button");
for (var i = 0; i < buttons.length; i++) {
buttons[i].addEventListener("click", function() {
handleButtonClick(this);
});
}
});
} catch (error) {
// This will throw the error to the parent window.
throw error;
}
</script>
<style>
/* App CSS Goes Here */
body {
background-color: #f2f2f2;
font-family: 'Roboto', sans-serif;
}
.calculator-container {
max-width: 400px;
margin: 0 auto;
background-color: #fff;
border-radius: 8px;
padding: 20px;
box-shadow: 0 0 10px rgba(0, 0, 0, 0.2);
}
.calculator-input {
width: 100%;
height: 50px;
font-size: 24px;
padding: 10px;
border: none;
border-radius: 4px;
margin-bottom: 20px;
}
.calculator-button {
width: 50px;
height: 50px;
font-size: 24px;
margin-right: 10px;
margin-bottom: 10px;
border: none;
border-radius: 4px;
background-color: #f2f2f2;
cursor: pointer;
}
.calculator-button:hover {
background-color: #e6e6e6;
}
.calculator-button:active {
background-color: #d9d9d9;
}
.calculator-button.special {
background-color: #ff5c5c;
color: #fff;
}
.calculator-button.special:hover {
background-color: #ff4040;
}
.calculator-button.special:active {
background-color: #ff3333;
}
</style>
</head>
<body>
<div id="main-container" class="container">
<div class="calculator-container">
<input id="input" class="calculator-input" type="text" readonly>
<div>
<button class="calculator-button" value="7">7</button>
<button class="calculator-button" value="8">8</button>
<button class="calculator-button" value="9">9</button>
<button class="calculator-button" value="+">+</button>
</div>
<div>
<button class="calculator-button" value="4">4</button>
<button class="calculator-button" value="5">5</button>
<button class="calculator-button" value="6">6</button>
<button class="calculator-button" value="-">-</button>
</div>
<div>
<button class="calculator-button" value="1">1</button>
<button class="calculator-button" value="2">2</button>
<button class="calculator-button" value="3">3</button>
<button class="calculator-button" value="*">*</button>
</div>
<div>
<button class="calculator-button" value="0">0</button>
<button class="calculator-button" value=".">.</button>
<button class="calculator-button special" value="clear">C</button>
<button class="calculator-button special" value="calculate">=</button>
</div>
</div>
</div>
</body>
</html>
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