calculator/script.js at main · aditii23/calculator · GitHub

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const clickSound = new Audio("click.mp3");
const display = document.getElementById("display");

function append(value) {
  display.value += value;
}

function clearDisplay() {
  display.value = "";
}

function deleteLast() {
  display.value = display.value.slice(0, -1);
}

function calculate() {
  try {
    let result = display.value
      .replace(/π/g, Math.PI)        // Replace π with Math.PI
      .replace(/×/g, "*")            // Optional: in case user types ×
      .replace(/÷/g, "/")            // Optional: in case user types ÷
      .replace(/%/g, "/100");        // Convert percent to division

    display.value = eval(result);
  } catch {
    display.value = "Error";
  }
}

// Keyboard Support
document.addEventListener("keydown", (e) => {
  const allowedKeys = "0123456789/*-+.%().";
  if (allowedKeys.includes(e.key)) {
    append(e.key);
  } else if (e.key === "Enter") {
    calculate();
  } else if (e.key === "Backspace") {
    deleteLast();
  } else if (e.key.toLowerCase() === "c") {
    clearDisplay();
  }
});

function append(value) {
  clickSound.play();
  display.value += value;
}

function clearDisplay() {
  clickSound.play();
  display.value = "";
}

function deleteLast() {
  clickSound.play();
  display.value = display.value.slice(0, -1);
}

function calculate() {
  clickSound.play();
  try {
    let result = display.value
      .replace(/π/g, Math.PI)
      .replace(/×/g, "*")
      .replace(/÷/g, "/")
      .replace(/%/g, "/100");

    display.value = eval(result);
  } catch {
    display.value = "Error";
  }
}