JSFiddle - React, Tailwind, and code Playground
HTML
<div class="icon-locked" id="locked">Toggle</div>
<select class="form-control" id="signontype" disabled>
<option>Option 01</option>
<option>Option 02</option>
</select>
CSS
#toggle {
cursor:pointer;
}
JavaScript
$("#locked").click(function () {
$(this).toggleClass("pulse-icon-unlocked");
$('select#signontype').prop('disabled', !$(this).hasClass("pulse-icon-unlocked"));
});