JSFiddle - React, Tailwind, and code Playground

HTML

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <title>http://stackoverflow.com/questions/5322608/jqgrid-tree-view-adjacencey/5333199#5333199</title>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />

    <link rel="stylesheet" type="text/css" href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.14/themes/redmond/jquery-ui.css" />
    <link rel="stylesheet" type="text/css" href="http://www.ok-soft-gmbh.com/jqGrid/jquery.jqGrid-4.1.2/css/ui.jqgrid.css" />
    <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.6.2/jquery.min.js"></script>
    <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.14/jquery-ui.min.js"></script>
    <script type="text/javascript" src="http://www.ok-soft-gmbh.com/jqGrid/jquery.jqGrid-4.1.2/js/i18n/grid.locale-en.js"></script>
    <script type="text/javascript">
        $.jgrid.no_legacy_api = true;
        $.jgrid.useJSON = true;
    </script>
    <script type="text/javascript" src="http://www.ok-soft-gmbh.com/jqGrid/jquery.jqGrid-4.1.2/js/jquery.jqGrid.min.js"></script>

    <script type="text/javascript">
    //<![CDATA[
        $(function(){
            'use strict';
            var mydata = [
                { id:"1", name:"Cash",   num:"100",
                  level:"0", parent:"",  isLeaf:false, expanded:true, loaded:true},
                { id:"2", name:"Cash 1", num:"1",
                  level:"1", parent:"1", isLeaf:false, expanded:false, loaded:true },
                { id:"3", name:"Sub Cash 1", num:"1",
                  level:"2", parent:"2", isLeaf:true,  expanded:false, loaded:true },
                { id:"4", name:"Cash 2", num:"2",
                  level:"1", parent:"1", isLeaf:true,  expanded:false, loaded:true },
                { id:"5", name:"Bank\'s", num:"200",
                  level:"0", parent:"", ...