<input type="text" id="num1">
  <input type="text" id="num2">
  <br>
  <button onclick="add()">+</button>
  <button onclick="subtract()">-</button>
  <button onclick="multiply()">*</button>
  <button onclick="divide()">/</button>
  <button onclick="clear()">C</button>
</form>

As you can see, we’ve added input fields for two numbers and buttons for addition, subtraction, multiplication, division, and clear.

JavaScript for Calculator Functionality