Marking an Element Expandable using a Checkbox

Please click the following checkbox.

Code

<p>
  Please click the following checkbox.
</p>
<input id="checkbox" type="checkbox" /><label for="checkbox">Show tooltip</label>
<div hidden="" id="tooltip">
  Thanks for toggling! Please click again to hide me.
</div>
NIL
(function() {
  $(document).ready(function() {
    var $checkbox, $tooltip;
    $checkbox = $("input");
    $tooltip = $("#tooltip");
    return $checkbox.change(() => {
      if ($tooltip.attr("hidden") === "hidden") {
        return $tooltip.removeAttr("hidden");
      } else {
        return $tooltip.attr("hidden", true);
      }
    });
  });

}).call(this);

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//# sourceURL=coffeescript