HTML-JS-CSS/practical_12.html at main · madanrajsagar/HTML-JS-CSS · GitHub

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<!DOCTYPE html>
<html>
<head>
  <title>Form Validation</title>
</head>
<body>
  <form onsubmit="return validateForm()">
    <label for="name">Name:</label>
    <input type="text" id="name" name="name"><br><br>

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

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

  <script>
    function validateForm() {
      let name = document.getElementById("name").value;
      let email = document.getElementById("email").value;

      // Basic name validation (only letters and spaces allowed)
      let nameRegex = /^[a-zA-Z ]+$/;
      if (!nameRegex.test(name)) {
        alert("Invalid name. Please use only letters and spaces.");
        return false;
      }

      // Basic email validation
      let emailRegex = /^[^\s@]+@[^\s@]+\.[^\s@]+$/;
      if (!emailRegex.test(email)) {
        alert("Invalid email address.");
        return false;
      }

      // Form is valid, submit it
      alert("Form submitted successfully!");
      return true;
    }
  </script>
</body>
</html>