Smart All-in-One Calculator App
Addition
Subtraction
Multiplication
Division
document.getElementById(‘calculateBtn’).addEventListener(‘click’, function() {
const value1 = parseFloat(document.getElementById(‘inputValue’).value);
const value2 = parseFloat(document.getElementById(‘secondValue’).value);
const operation = document.getElementById(‘operationSelect’).value;
let result = 0;
switch(operation) {
case ‘addition’:
result = value1 + value2;
break;
case ‘subtraction’:
result = value1 – value2;
break;
case ‘multiplication’:
result = value1 * value2;
break;
case ‘division’:
result = value1 / value2;
break;
default:
result = ‘Invalid operation’;
}
document.getElementById(‘resultText’).innerText = ‘Result: ‘ + result;
});
