function performCalculation() {
let inputValue = parseFloat(document.getElementById(“inputValue”).value);
let operation = document.getElementById(“operation”).value;
let result = 0;
if (isNaN(inputValue)) {
alert(“Please enter a valid number.”);
return;
}
switch (operation) {
case “addition”:
result = inputValue + 10; // Example: add 10
break;
case “subtraction”:
result = inputValue – 10; // Example: subtract 10
break;
case “multiplication”:
result = inputValue * 2; // Example: multiply by 2
break;
case “division”:
if (inputValue === 0) {
alert(“Cannot divide by zero.”);
return;
}
result = inputValue / 2; // Example: divide by 2
break;
case “squareRoot”:
if (inputValue < 0) {
alert("Cannot compute the square root of a negative number.");
return;
}
result = Math.sqrt(inputValue); // Square root
break;
}
document.getElementById("result").value = result.toFixed(2);
}
function resetCalculator() {
document.getElementById("fx991exPlusForm").reset();
document.getElementById("result").value = "";
}
