I was searching for Tizen form validation tutorial in both web and native app. I found nothing about these in popular libraries like jQuery/Angular JS.
I found this https://developer.tizen.org/community/tip-tech/using-livevalidation-javascript-library
You can use any available form validation plugins uing Jquery/AngularJS which are application for hosted Web Application. For example, i am using jQuery Validation Plugin.
Just follow 2mins tutorial from here.
I have adjusted the form in Tizen UI.
<div id="main" class="page">
<div class="contents">
<div class="container">
<form action="" name="registration">
<label for="firstname">First Name</label>
<input type="text" name="firstname" id="firstname" placeholder="Steave"/>
<label for="lastname">Last Name</label>
<input type="text" name="lastname" id="lastname" placeholder="Smith"/>
<label for="email">Email</label>
<input type="email" name="email" id="email" placeholder="xyz@s.com"/>
<label for="password">Password</label>
<input type="password" name="password" id="password" placeholder="●●●●●"/>
<button type="submit">Register</button>
</form>
</div>
</div>
</div>
Required libraries and js must be added.
<script src="lib/jquery.js"></script>
<script src="lib/jquery.validate.min.js"></script>
<script src="js/form-validation.js"></script>