diff --git a/frame.js b/frame.js
index cbe82e48..6a4d2564 100644
--- a/frame.js
+++ b/frame.js
@@ -279,7 +279,7 @@ Volcanos("onappend", {help: "渲染引擎", list: [], _init: function(can, meta,
},
tree: function(can, list, field, split, cb, target, node) {
node = node || {"": target}; can.core.List(list, function(item) {
- item[field] && can.core.List(item[field].split(split), function(value, index, array) {
+ item[field] && can.core.List(item[field].split(split), function(value, index, array) { if (!value) { return }
var last = array.slice(0, index).join(split), name = array.slice(0, index+1).join(split)
node[name] || (node[name] = can.page.Append(can, node[last], [{view: ["item", html.DIV, value+(index==array.length-1?"":split)], onclick: function(event) {
diff --git a/page/cmd.html b/page/cmd.html
index 3c2bad7c..7316b16a 100644
--- a/page/cmd.html
+++ b/page/cmd.html
@@ -1,5 +1,7 @@
+
+