JSFiddle - React, Tailwind, and code Playground
by Nick Craver
HTML
<link rel="stylesheet" href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8/themes/dot-luv/jquery-ui.css">
<div id="test" class="col1">
<div class="col1">
Col 1
</div>
<div class="col2">
Col 2
</div>
<div class="col3">
Col 3
</div>
</div>
JavaScript
$("#test > div:not(." + $("#test").attr("class") + ")").hide();