Free Online Calculator
Use this calculator for various calculations without any cost or registration required.
Addition
Subtraction
Multiplication
Division
function calculateResult() {
const value1 = parseFloat(document.getElementById(‘value1’).value);
const value2 = parseFloat(document.getElementById(‘value2’).value);
const operation = document.getElementById(‘operation’).value;
let result;
if (isNaN(value1) || isNaN(value2)) {
alert(‘Please enter valid numbers for both values.’);
return;
}
switch (operation) {
case ‘add’:
result = value1 + value2;
break;
case ‘subtract’:
result = value1 – value2;
break;
case ‘multiply’:
result = value1 * value2;
break;
case ‘divide’:
if (value2 === 0) {
alert(‘Cannot divide by zero.’);
return;
}
result = value1 / value2;
break;
default:
result = ‘Invalid operation’;
}
document.getElementById(‘result’).value = result;
}
function clearFields() {
document.getElementById(‘value1’).value = ”;
document.getElementById(‘value2’).value = ”;
document.getElementById(‘result’).value = ”;
document.getElementById(‘operation’).value = ‘add’;
}
