CSIT_Labs/5th_Semester/Web_Technology/Lab3 (Javascript & XML)/5_client-side-validation.html at main · sthsuyash/CSIT_Labs · 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>Q.5 Form Validation</title>
    <style>
      .error {
        color: red;
      }
    </style>
  </head>
  <body>
    <h2>Form Validation</h2>
    <form id="myForm" onsubmit="validateForm()">
      <label for="name">Name:</label>
      <input type="text" id="name" name="name" />
      <span id="nameError" class="error"></span><br />

      <label for="age">Age:</label>
      <input type="text" id="age" name="age" />
      <span id="ageError" class="error"></span><br />

      <label for="phone">Phone Number:</label>
      <input type="text" id="phone" name="phone" />
      <span id="phoneError" class="error"></span><br />

      <label for="email">Email:</label>
      <input type="text" id="email" name="email" />
      <span id="emailError" class="error"></span><br />

      <label for="colleges">Colleges:</label>
      <select id="colleges" name="colleges">
        <option value="" disabled selected>Select a college</option>
        <option value="college1">College 1</option>
        <option value="college2">College 2</option> </select
      ><br />

      <label>Gender:</label>
      <input type="radio" id="male" name="gender" value="male" /> Male
      <input type="radio" id="female" name="gender" value="female" /> Female
      <input type="radio" id="other" name="gender" value="other" /> Other<br />
      <span id="genderError" class="error"></span><br />

      <label>
        <input type="checkbox" id="terms" name="terms" /> I accept all the terms
      </label>
      <span id="termsError" class="error"></span><br />

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

    <script>
      function validateForm() {
        var name = document.getElementById('name').value;
        var age = document.getElementById('age').value;
        var phone = document.getElementById('phone').value;
        var email = document.getElementById('email').value;
        var colleges = document.getElementById('colleges').value;
        var gender = document.querySelector('input[name="gender"]:checked');
        var terms = document.getElementById('terms').checked;

        if (name.length < 7 || !/^[a-zA-Z\s]+$/.test(name)) {
          document.getElementById('nameError').innerHTML =
            'Name must be at least 7 characters long and contain only alphabets and spaces.';
          return false;
        }

        if (!/^\d+$/.test(age) || age < 18 || age > 50) {
          document.getElementById('ageError').innerHTML =
            'Age must be an integer between 18 and 50.';
          return false;
        }

        if (!/^[9][78]\d{8}$/.test(phone)) {
          document.getElementById('phoneError').innerHTML =
            'Phone number must be exactly 10 digits long and start with 98 or 97.';
          return false;
        }

        if (!/^\S+@\S+\.\S+$/.test(email)) {
          document.getElementById('emailError').innerHTML =
            'Invalid email address.';
          return false;
        }

        if (colleges === '') {
          alert('Please select a college.');
          return false;
        }

        if (!gender) {
          document.getElementById('genderError').innerHTML =
            'Please select a gender.';
          return false;
        }

        if (!terms) {
          document.getElementById('termsError').innerHTML =
            'Please accept the terms.';
          return false;
        }

        alert('Form submitted successfully!');
        return true;
      }
    </script>
  </body>
</html>