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if_else.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Grade Calculator</title>
<link rel="stylesheet" href="styles.css">
</head>
<body>
<h1>Grade Calculator</h1>
<form id="gradeForm">
<label for="marks">Enter your marks:</label>
<input type="number" id="marks" required>
<button type="submit">Calculate Grade</button>
</form>
<div id="result"></div>
<script>
// Function to calculate the grade
function getGrade(event) {
event.preventDefault(); // Prevent the form from refreshing the page
const marks = Number(document.getElementById('marks').value);
let grade;
// Grade calculation logic
if (marks >= 70 && marks <= 100) {
grade = 'A';
} else if (marks >= 60 && marks <= 69) {
grade = 'B';
} else if (marks >= 50&& marks <= 59) {
grade = 'C';
} else if (marks >= 40 && marks <= 49) {
grade = 'D';
} else if(marks >= 0 && marks <= 39) {
grade = 'F';
}else{
grade = 'Invalid Marks';
}
// Display the result
const resultDiv = document.getElementById('result');
resultDiv.innerText = `Your grade is: ${grade}`;
}
// Attach event listener to the form
document.getElementById('gradeForm').addEventListener('submit', getGrade);
</script>
</body>
</html>
<!-- <script src="./if_else.js" defer></script> -->