Looking for a solution to hide a div without modifying the HTML code directly? By using JQuery, you can manipulate the appearance of elements on a page. While it's possible to select the first instance of a class and retrieve its value, adding an attribute to hide it may require a different approach. The example provided showcases the challenge at hand.
<body>
<div class="formbox closed">
<div class="buttonbar">
<div class="toc_checkbox toc_email_optin" >
<input type="checkbox" name="booking.email_optin" id="email_optin" value="1">
<span></span>
</div>
</div>
<div class="buttonbar">
<div class="toc_checkbox toc_email_optin" >
<span></span>
</div>
</div>
</div>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js">
$( "#buttonbar:first" ).css("visibility", "hidden");
</script>
</body>