HTML_CSS_JS/validation.html at main · SM991-web/HTML_CSS_JS · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Simple Form Validation</title>
    <script type="text/javascript">
        document.addEventListener("DOMContentLoaded", function() {
            document.getElementById("myForm").onsubmit = function(event) {
                if (!document.getElementById("name").value || !document.getElementById("email").value) {
                    alert("All fields are required.");
                    event.preventDefault();
                }
            };
        });
    </script>
</head>
<body>
    <h2>Simple Form Validation</h2>
    <form id="myForm">
        <label>Name:</label>
        <input type="text" id="name"><br><br>

        <label>Email:</label>
        <input type="text" id="email"><br><br>

        <input type="submit" value="Submit">
    </form>
</body>
</html>