jstree Example - Simple

HTML

<script src="http://static.jstree.com/3.0.0-beta3/assets/dist/jstree.min.js"></script>
<link rel="stylesheet" href="http://static.jstree.com/3.0.0-beta3/assets/dist/themes/default/style.min.css">
<div id="jstree">
    <ul>
        <li>Folder 1
            <ul>
               <li id="child_1">Child 1</li>
               <li>Child 2</li>
            </ul>
        </li>
        <li>Folder 2</li>
    </ul>
</div>

CSS

ul:not(.jstree-children) > li.jstree-node > a.jstree-anchor > i.jstree-checkbox
{
    display:none;
}

JavaScript

$(function () {
    $('#jstree').jstree({
      "checkbox": {
          "keep_selected_style": true
      },
      "plugins": ["checkbox"]
  });
});