php javascript login form\ code example

Example: login javascript php

<aside id="login" class="col-md-4">    
    <div class="card">
        <div class="card-body">
            <a href="" class="float-right btn btn-outline-primary">Registro</a>
            <h4 class="card-title mb-4 mt-1">Acceso</h4>
        
            <hr />
          
            <form method="post" name="login_form" id="login_form" action="" onsubmit="enviar(this); return false;">
                <div class="form-group">
                    <input class="form-control" placeholder="Email" type="email" id="email" name="email" value="[email protected]" autocomplete />
                </div>
                <div class="form-group">
                    <input class="form-control" placeholder="******" type="password" id="password" name="password" autocomplete />
                </div>                                    
                <div class="row">
                    <div class="col-md-6">
                        <div class="form-group">
                            <button type="submit" class="btn btn-primary btn-block" id="access" name="access">Acceso</button>
                        </div> 
                    </div>
                    <div class="col-md-6 pt-2 pr-4 text-right">
                        <a class="small" href="#" class="">¿Olvidó su contraseña?</a>
                    </div>                                            
                </div>      
            </form>
                
            <!-- messages -->
            <div class="row">
                <div class="col-12">
                    <div class="outer-loader">
                        <span class="inner-loader"><img src="assets/img/loader.gif" alt="consultando ..." /></span>     
                        <span class="messages"></span>
                    </div>    
                    <span class="debug"></span>    
                </div>
            </div> <!-- end messages -->     
        </div>
        
    </div> 
</aside>