$(‘#Tree‘).tree({
onExpand: function (node) {
$("#Tree .tree-node").removeClass("tree-node-css");
$("#Tree .tree-node:visible:odd").toggleClass("tree-node-css");
},
onCollapse: function (node) {
$("#Tree .tree-node").removeClass("tree-node-css");
$("#Tree .tree-node:visible:odd").toggleClass("tree-node-css");
}
});
1 .tree-node-css { 2 background: #e2e2e2; 3 color: #000000; 4 }
原文：http://www.cnblogs.com/zhangzekun/p/5829481.html