easyui给tree加个title提示

相关的js：

var tmpRightTitle = {};
var titleIndex = 1;
$.post(rightUrl, function (data)
        //data = $.parseJSON(data);
        //console.log(data);
        for (i = 0; i < data.length; i++) {
            if (data[i].ParentSN == "") {
                $('#umenu').tree('append', {
                    data: [{
                        parent: null,
                        text: data[i].Name,
                        id: data[i].SN,
                        tag: '',
                        iconCls: data[i].Image,
                        title:data[i].Remark
                    }]
                });
                tmpRightTitle[titleIndex] = data[i].SN;
                titleIndex++;
                (function ()//目前这个写法，只支持二级菜单，菜单数据由后台提供
                    var k = arguments[0];
                    //console.log(k.Children);
                    var sel = $('#umenu').tree('find', k.SN);
                    for (j = 0; j < k.Children.length; j++) {
                        var cnode = k.Children[j];
                        var url = rootPath + '/' + cnode.Controller + '/' + cnode.Action;
                        $('#umenu').tree('append', {
                            parent: sel.target,
                            data: [{
                                text: cnode.Name,
                                id: cnode.SN,
                                tag: url,
                                iconCls: cnode.Image,
                                title: cnode.Remark
                            }]
                        });
                        tmpRightTitle[titleIndex] = cnode.SN;
                        titleIndex++;
                    }
                    $('#umenu').tree('collapse', sel.target);
                })(data[i])
            }
        }
    });

    umenu.tree({
        onSelect: function (node)
            if (node.state == 'closed') {
                umenu.tree('expand', node.target);
                node.state = 'open';
            }
            else {
                umenu.tree('collapse', node.target);
                node.state = 'closed';
            }
        },
        onClick: function (node)
            if (node.tag != "") {
                change(node.text, node.tag);
            }
        },
        onLoadSuccess: function (e, row)
            addTreeTitle(row);//调用上面定义的方法 

function addTreeTitle(row)
    for (var key in tmpRightTitle) {
        var title = $('#_easyui_tree_' + key);
        var node = umenu.tree('find', tmpRightTitle[key]);
        title.attr('title', node.title);
    }
}

思路：在加载树的时候，记录下节点的序号，并给节点加上title属性，这个只是为后边的方法提供一下数据，在onLoadSuccess事件调用加title的方法，easyui生成的树代码如下：

<div id="_easyui_tree_1" class="tree-node"
<span class="tree-hit tree-collapsed"></span>
<span class="tree-icon tree-folder icon-root"></span>
<span class="tree-title">系统设置</span>
</div>

格式统一都是id 名：easyui_tree序号，因此通过找到这个div，给这个div加上title属性，就可以有鼠标提示了。