diff --git a/frame.js b/frame.js
index 36c7b7fb..7b60b764 100644
--- a/frame.js
+++ b/frame.js
@@ -195,16 +195,18 @@ Volcanos("onappend", {help: "渲染引擎", list: [], _init: function(can, meta,
 					_list.push(mdb.PREV, mdb.NEXT)
 					break
 				default:
-					var item = can.core.SplitInput(list[i], html.BUTTON);
-					if (item.type == html.SELECT) {
-						item._init = function(target) {
-							target.value = item.value
-							target.onchange = function(event) { can.run(event) }
+					(function() {
+						var item = can.core.SplitInput(list[i], html.BUTTON);
+						if (item.type == html.SELECT) {
+							item._init = function(target) {
+								target.value = item.value||item.values[0]
+								target.onchange = function(event) { can.run(event) }
+							}
 						}
-					}
-					item.action && (function() {
-						item._init = function(target) { can.onappend.figure(can, item, target) }
-					})(), item.type == html.BUTTON? _list.push(list[i]): _list.push(item)
+						item.action && (function() {
+							item._init = function(target) { can.onappend.figure(can, item, target) }
+						})(), item.type == html.BUTTON? _list.push(list[i]): _list.push(item)
+					}) ()
 			}
 		}
 		meta = meta||can.onaction, action = action||can._action, can.onmotion.clear(can, action)
diff --git a/lib/core.js b/lib/core.js
index 025759ca..f3f7380d 100644
--- a/lib/core.js
+++ b/lib/core.js
@@ -184,10 +184,9 @@ Volcanos("core", {help: "数据结构",
 						case "=":
 							if (res[mdb.TYPE] == html.SELECT) {
 								res.values = this.Split(ls[i+1])
-								for (var i = 1; i < res.values.length; i++) {
-									if (res.values[0] == res.values[i]) {
-										res.value = res.values[0]
-										res.values = res.values.slice(1)
+								for (var j = 1; j < res.values.length; j++) {
+									if (res.values[0] == "" || res.values[0] == res.values[j]) {
+										res.value = res.values[0], res.values = res.values.slice(1)
 										break
 									}
 								}
diff --git a/lib/page.js b/lib/page.js
index 11c65ede..1d8028b7 100644
--- a/lib/page.js
+++ b/lib/page.js
@@ -41,7 +41,7 @@ Volcanos("page", {help: "用户界面", ClassList: {
 		return can.core.List(target && target.querySelectorAll(can.page.Keys(key)), cb, interval, cbs)
 	}),
 	Modify: shy("修改节点", function(can, target, value) { target = target||{}
-		target = can.base.isObject(target)? target: document.querySelector(target)
+		target = can.base.isObject(target)? target: document.querySelector(target); if (!target) { return }
 		can.base.isString(value)? (target.innerHTML = value): can.core.Item(value, function(key, val) {
 			!can.base.isObject(val)? (target[key] = val): can.core.Item(val, function(k, v) {
 				var size = {