I like to set simple quiz form. Can be improved Javascript as click inside textarea will open new input for the email. I do not like to use POPup in this case due to usability issues.
<!DOCTYPE HTML>
<html>
<head>
<title>Toggle</title>
<script>
var Add_input1 = {
init: function() {
$("#clickedarea").focus(function()
{
$("#clickedarea_hide").show()
}
)
}
}
Add_input1.init();
</script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.2.0/jquery.min.js"></script>
</head>
<body>
<div class="clicked_form_area1">
<form id="" novalidate="novalidate">
<label>clicked form</label>
<textarea rows="" id="clickedarea" name="clickedinput"></textarea>
<div id="clickedarea_hide" style="display: none;">
<label>Email</label>
<input name="emailinput" id="email" type="text">
</div><!-- .clickedarea_hide -->
<button type="submit">Submit form</button>
</form>
<div class="dialog"></div>
<div id="alert-message-success" style="display:none;">
Thanks for your message!
</div>
</div>
</body>
</html>