$('#selShenqFuwujg').combotree({
            url: '../../GetFuwujgInfo.aspx?type=GetFuwujgTree&PID=',
            onLoadSuccess: function (node, data) {
                if (!loadFlag && data != null) {
                    node = $('#selShenqFuwujg').combotree("tree").tree("find", data[0].id);
                    loadFlag = true;

                    //for (i = 0; i < node.length ; i++) {
                    //    node = $('#selShenqFuwujg').combotree('tree').tree('find', node[i]);
                    //    $('#selShenqFuwujg').combotree('tree').tree('check', node.target);
                    //    $('#selShenqFuwujg').combotree('tree').tree('expandAll', node.target);
                    //}
                    //debugger;
                    //$('#selShenqFuwujg').combotree("setValue", data[0].id);
                    $('#selShenqFuwujg').combotree('setValue', { id: data[0].id, text: data[0].text });
                    //$('#selShenqFuwujg').combotree("check", data[0].id);

                }
            },
            onBeforeExpand: function (node) {
                var children = $('#selShenqFuwujg').combotree("tree").tree('getChildren', node.target);
                if (children.length < 1) {
                    trnode = node.id;
                    $('#selShenqFuwujg').combotree("tree").tree("options").url = '../../GetFuwujgInfo.aspx?type=GetFuwujgTree&PID=' + node.id;
                }
            },
            onChange: function (newValue, oldValue) {
            }
        });
 

重點 實現就一句

$('#selShenqFuwujg').combotree('setValue', { id: data[0].id, text: data[0].text });

注意easyui的版本

其他實現方式請參考文末的[參考文獻]

ui15HxuSTE8K4I5UoduCikUW9sF0L+AeUqXS2ZYcGgbtX6y9N2sgIXj7t2tdVuUkUXjQIw07pmpW8kf4dsAaF57DErBAAVTfrD744z8U0a50m6Ylijf/sjVyDuDzCvulXz+2yByNbN/Wx6IfeNeDYttsqR97o62E32bWzqxjjgs=

參考文獻:

[1]http://bbs.csdn.net/topics/370205131

[2]http://aokunsang.iteye.com/blog/1489204

[3]http://blog.csdn.net/zhu_nana/article/details/50036275

[4]http://www.cnblogs.com/jingsha/p/5596745.html