diff --git a/cocos/scripting/js-bindings/script/jsb_boot.js b/cocos/scripting/js-bindings/script/jsb_boot.js
index 09b4123a9c8f..7f3eaaf8146c 100644
--- a/cocos/scripting/js-bindings/script/jsb_boot.js
+++ b/cocos/scripting/js-bindings/script/jsb_boot.js
@@ -625,15 +625,18 @@ cc.loader = {
         }
         var basePath = loader.getBasePath ? loader.getBasePath() : self.resPath;
         var realUrl = self.getUrl(basePath, url);
-        var data = loader.load(realUrl, url);
-        if (data) {
-            self.cache[url] = data;
-            cb(null, data);
-        } else {
-            self.cache[url] = null;
-            delete self.cache[url];
-            cb();
-        }
+
+        loader.load(realUrl, url, item, function (err, data) {
+            if (err) {
+                cc.log(err);
+                self.cache[url] = null;
+                delete self.cache[url];
+                cb();
+            } else {
+                self.cache[url] = data;
+                cb(null, data);
+            }
+        });
     },
     
     /**
@@ -776,13 +779,18 @@ cc.loader = {
      * Release the cache of resource by url.
      * @param url
      */
-    release : function(url){//do nothing in jsb
+    release : function(url){
+        var cache = this.cache;
+        delete cache[url];
     },
     
     /**
      * Resource cache of all resources.
      */
-    releaseAll : function(){//do nothing in jsb
+    releaseAll : function(){
+        var locCache = this.cache;
+        for (var key in locCache)
+            delete locCache[key];
     }
     
 };
diff --git a/cocos/scripting/js-bindings/script/jsb_loaders.js b/cocos/scripting/js-bindings/script/jsb_loaders.js
index 9ef7ec5900b3..1259e1a6c69c 100644
--- a/cocos/scripting/js-bindings/script/jsb_loaders.js
+++ b/cocos/scripting/js-bindings/script/jsb_loaders.js
@@ -27,7 +27,8 @@
 //
 
 cc._emptyLoader = {
-    load : function(realUrl, url){
+    load : function(realUrl, url, res, cb){
+        cb && cb(null, null);
         return null;
     }
 };
@@ -39,21 +40,25 @@ cc.loader.register([
                     cc._emptyLoader);
 
 cc._txtLoader = {
-    load : function(realUrl, url){
-        return jsb.fileUtils.getStringFromFile(realUrl);
+    load : function(realUrl, url, res, cb){
+        var result = jsb.fileUtils.getStringFromFile(realUrl);
+        cb && cb(null, result);
+        return result;
     }
 };
 cc.loader.register(["txt", "xml", "vsh", "fsh", "tmx", "tsx"], cc._txtLoader);
 
 cc._jsonLoader = {
-    load : function(realUrl, url){
-        var data = jsb.fileUtils.getStringFromFile(realUrl);
+    load : function(realUrl, url, res, cb){
+        var data = jsb.fileUtils.getStringFromFile(realUrl), result;
         try{
-            return JSON.parse(data);
+            result = JSON.parse(data);
         }catch(e){
             cc.error(e);
-            return null;
+            result = null;
         }
+        cb && cb(null, result);
+        return result;
     }
 };
 cc.loader.register(["json", "ExportJson"], cc._jsonLoader);
@@ -73,16 +78,20 @@ cc._imgLoader = {
 cc.loader.register(["png", "jpg", "bmp","jpeg","gif"], cc._imgLoader);
 
 cc._plistLoader = {
-    load : function(realUrl, url){
+    load : function(realUrl, url, res, cb){
         var content = jsb.fileUtils.getStringFromFile(realUrl);
-        return cc.plistParser.parse(content);
+        var result = cc.plistParser.parse(content);
+        cb && cb(null, result);
+        return result;
     }
 };
 cc.loader.register(["plist"], cc._plistLoader);
 
 cc._binaryLoader = {
-    load : function(realUrl, url){
-        return cc.loader.loadBinarySync(realUrl);
+    load : function(realUrl, url, res, cb){
+        var result = cc.loader.loadBinarySync(realUrl);
+        cb && cb(null, result);
+        return result;
     }
 };
 cc.loader.register(["ccbi"], cc._binaryLoader);
@@ -166,9 +175,12 @@ cc._fntLoader = {
         return fnt;
     },
 
-    load : function(realUrl, url){
-        var data = jsb.fileUtils.getStringFromFile(realUrl);
-        return this.parseFnt(data, url);
+    load : function(realUrl, url, res, cb){
+        var data = jsb.fileUtils.getStringFromFile(realUrl), result = null;
+        if (data)
+            result = this.parseFnt(data, url);
+        cb && cb(null, result);
+        return result;
     }
 };
 cc.loader.register(["fnt"], cc._fntLoader);