jeasyui 错误

你好：
我刚开始使用jeasyui ，用的是它的tree，照着写了一个代码，但提出错误jQuery requires a window。with a document".
整体代码如下：在调用appendNodes 时候没反应 firebug出现以上错误，其它正常显示 您能帮我看下什么原因吗 谢谢
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>无标题文档</title>
<link href="bootstrap-3.3.5-dist/css/bootstrap.min.css" rel="stylesheet" type="text/css">
<link href="jquery-easyui-1.4.3/themes/default/easyui.css" rel="stylesheet" type="text/css">
<link href="jquery-easyui-1.4.3/themes/icon.css" rel="stylesheet" type="text/css">
<link href="jquery-easyui-1.4.3/themes/color.css" rel="stylesheet" type="text/css">
<link href="jquery-easyui-1.4.3/themes/mobile.css" rel="stylesheet" type="text/css">
<link href="test_css.css" rel="stylesheet" type="text/css">
<!--link href="jquery-ui-1.11.4.custom/jquery-ui-1.11.4.custom/jquery-ui.min.css" rel="stylesheet" type="text/css"-->



<!--ript type="text/javascript" src="jquery-ui-1.11.4.custom/jquery-ui-1.11.4.custom/jquery-ui.min.js"></script-->
<script type="text/javascript" src="bootstrap-3.3.5-dist/js/jquery-1.11.3.min.js"></script>
<script type="text/javascript" src="jquery-easyui-1.4.3/jquery.easyui.min.js"></script>


<script type="text/javascript" src="bootstrap-3.3.5-dist/js/bootstrap.min.js"></script>
<!--[if lte IE 9]>
<script src="bootstrap/js/respond.min.js">
</script>
<script src="bootstrap/js/html5.js">
</script>
<!--[endif]-->

<!--/script-->

</head>

<body>
<script type="text/javascript">
function appendnodes(){
var node = $('#tt').tree('getSelected');
if (!node) alert("node 为空");
if (node){
var nodes = [{
"id":13,
"text":"Raspberry"
},{
"id":14,
"text":"Cantaloupe"
}];
$('#tt').tree('append', {
parent:node.target,
data:nodes
});
}
}
</script>
<div class="container">
<div class="row">
<div class="col-lg-12 header"></div>
<div class="col-lg-12">
<div class="test_box-shadow">
</div>
</div>
<div class="row">
<div class="col-lg-4">

<div class="new_tree">
<p><a href='#' onClick="appendNodes()">append Nodes</a></p>
<ul class="easyui-tree" id="tt" url="jeasyui-tree-tree3\jeasyui-tree-tree3\tree_data.json">
</ul>
</div>
</div>
<div class="col-lg-8">
</div>

</div>
</div>
</div>
</body>
</html>