js代码：
<link href="Ztree/zTreeStyle.css" rel="stylesheet" type="text/css" />
<script src="js/jquery-1.4.4.min.js" type="text/javascript"></script>
<script src="Ztree/jquery.ztree.core-3.1.js" type="text/javascript"></script>
<script src="Ztree/jquery.ztree.excheck-3.1.min.js" type="text/javascript"></script>
<script type="text/javascript">
jQuery.noConflict(); //重载 默认JQuery
</script>
<script language="javascript">
var setting = {
check: {
enable: true
},
data: {
simpleData: {
enable: true
}
}
};
var zTreeNodes;
jQuery(document).ready(function(){
jQuery.ajax({
type: "POST",
url: "Web/GetZNodes.ashx",
success: function (msg) {
alert(msg);//有值
zTreeNodes = msg;
jQuery.fn.zTree.init(jQuery("#tree"), setting, zTreeNodes);
},
error: function (XMLHttpRequest, textStatus, errorThrown) {
alert(XMLHttpRequest)
}
});
});
从Web/GetZNodes.ashx这个页面也能拿到json ：


json必须是对象而不是字符串

zTreeNodes = eval(msg);
这样搞了后就行啦 。是不是eval把msg转成对象了？

是的