Hide contact form for unregistered

1) Hello I want to know how to hide contact form in widget for unregistered, I have used the following code and I have put it in footer script and it does not work for me.

<script>
if (!jQuery(“.logged-in”)[0]){
jQuery(‘#ContactForm2’).parent().hide();
}
</script>

2) I also want to know how to display a registry button for unregistered users and hide for registered users.

In this case the button would have the following text (Apply this job) The button would direct to the registration form.