FX 991ES Plus Calculator Online
Add
Subtract
Multiply
Divide
Result: 0
function calculate() {
const value1 = parseFloat(document.getElementById(“value1”).value);
const value2 = parseFloat(document.getElementById(“value2”).value);
const operation = document.getElementById(“operation”).value;
let result = 0;
if (isNaN(value1) || isNaN(value2)) {
alert(“Please enter valid numbers.”);
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;
}
document.getElementById(“calculatedResult”).textContent = result;
}
