Easyui Tree对节点进行，添加，修改，删除操作

<script type="text/javascript">
$(function(){
$("#contentCategory").tree({
url : '/content/category/list',
animate: true,
method : "POST",
onContextMenu: function(e,node){
e.preventDefault();
$(this).tree('select',node.target);
$('#contentCategoryMenu').menu('show',{
left: e.pageX,
top: e.pageY
});
},
onSelect:function(node){
$(this).tree('expand',node.target);
},
onAfterEdit : function(node){
var _tree = $(this);
if(node.id == 0){
// 新增节点
$.post("/content/category/create",{parentId:node.parentId,name:node.text},function(data){
//后台返回数据封装一个状态值为200
if(data.status == 200){
_tree.tree("update",{
target : node.target,
id : data.data
});
}else{
$.messager.alert('提示','创建'+node.text+' 分类失败!');
}
});
}else{
$.post("/content/category/update",{id:node.id,name:node.text});
}
}
});
});
function menuHandler(item){
var tree = $("#contentCategory");
var node = tree.tree("getSelected");
if(item.name === "add"){
tree.tree('append', {
parent: (node?node.target:null),
data: [{
text: '新建分类',
id : 0,
parentId : node.id
}]
});
var _node = tree.tree('find',0);
tree.tree("select",_node.target).tree('beginEdit',_node.target);
}else if(item.name === "rename"){
tree.tree('beginEdit',node.target);
}else if(item.name === "delete"){
$.messager.confirm('确认','确定删除名为 '+node.text+' 的分类吗？',function(r){
if(r){
$.post("/content/category/delete/",{parentId:node.parentId,id:node.id},function(){
tree.tree("remove",node.target);
});
}
});
}
}
</script>