bootstrap studio email validation pattern code example

Example: javascript test login password in bootstrap studio

<div class="form-group">
    <input id="username" class="form-control item" name="username" type="text" placeholder="Username" >
</div>
<div class="form-group">
    <input id="password" class="form-control item" name="password" type="password" placeholder="Password">
</div>
<div class="form-group">
    <input id="email" class="form-control item"  name="email" type="email" placeholder="Email">
</div>
<div class="form-group">
    <button class="btn btn-primary btn-block create-account" type="submit">Create Account</button>
</div>