JSFiddle - React, Tailwind, and code Playground

HTML

<form>
    <div class="content">
        ...
    </div>
    <div class="action">
        <p>Select <a class="select_all" href="?select=1" title="Select All">All</a></p>
    </div>
</form>

JavaScript

function toggle_checkboxes(e) {
  var select_link = e.element();
  alert(select_link.up('form'));
  e.stop();
}

var base = '';
$$(base + ' .select_all', base + ' .select_none').invoke("observe", "click", toggle_checkboxes.bindAsEventListener(this));