Summation Calculator

 <h2>Summation Calculator</h2>
    <input type="number" id="number1" placeholder="Enter first number">
    <input type="number" id="number2" placeholder="Enter second number">
    <button onclick="calculateSum()">Calculate Sum</button>
    <p id="result"></p>

    <script>
        function calculateSum() {
            let num1 = parseFloat(document.getElementById("number1").value);
            let num2 = parseFloat(document.getElementById("number2").value);

            if(isNaN(num1) || isNaN(num2)) {
                document.getElementById("result").innerText = "Please enter valid numbers.";
                return;
            }

            let sum = num1 + num2;
            document.getElementById("result").innerText = "Result: " + sum;
        }
    </script>