Conditional Enter / Submit handling in HTML form

HTML

<form>
    <input id="login" name="login" type="text" placeholder="Your login">
    <input id="password" name="password" type="password" placeholder="Your password">
    <button type="submit" id="submit">Submit</button>
</form>

JavaScript

// Make submit more visible, for clarity
$('form').submit(function() { 
    alert('Submit!'); 
});

// Make Enter on login move cursor to Password
$('#login').on('keydown', function (e) {
    if (e.keyCode == 13) {
        // Move to password field if login not empty
        if($('#login').val() !== '')
            $('#password').focus();
        
        
        
        // Stop submit from being invoked
        // when Enter is pressed inside Login field
        e.preventDefault();
        
        alert("terminamos");
        
        
        
    }
    
    
});