给zTree的treeNode添加class

onNodeCreated 回调，捕获 DOM 创建完毕的回调，然后利用 zTree 的规则找到 treeNode.tId + "_a" 这样的 标签，自行添加 class 就是了

function zTreeOnNodeCreated(event, treeId, treeNode) {
    console.log($('#'+treeNode.tId+'_edit'),treeNode.tId + ", " + treeNode.name,'#'+treeNode.tId+'_edit');
    console.log($('#groupTree_1_span').next());
    groupTree_1_edit
};
//
function zTreeOnMouseDown(event, treeId, treeNode) {
    console.log(treeNode ? treeNode.tId + ", " + treeNode.name : "isRoot");
    console.log($('#groupTree_1_span').next());
    $('#'+treeNode.tId+'_span').next().addClass("update");
    $('#'+treeNode.tId+'_span').next().next().addClass("del");

};