Aim / उद्देश्य
Create a calculator for addition, subtraction, and multiplication. / जोड़, घटाव और गुणा करने वाला calculator बनाना।
Result appears here. / परिणाम यहाँ दिखाई देगा।
Program / प्रोग्राम
function calc(op) {
const a = Number(document.querySelector("#n1").value);
const b = Number(document.querySelector("#n2").value);
let result;
if (op === "add") result = a + b;
else if (op === "subtract") result = a - b;
else if (op === "multiply") result = a * b;
document.querySelector("#result").textContent = `Result = ${result}`;
}Example output / उदाहरण: Inputs 12 and 3: Add → 15; Subtract → 9; Multiply → 36.
Correction / सुधार: The uploaded source contains op = = '+' , which is invalid syntax. Use strict comparison such as op === "add". The multiplication button should pass a clear operation name, not #.