diff --git a/background.js b/background.js
index 9ba68ef..2a2487c 100644
--- a/background.js
+++ b/background.js
@@ -82,4 +82,10 @@ function AttachDebugger() {
       });
     }
   );
-}
\ No newline at end of file
+}
+
+chrome.cookies.onChanged.addListener(function(info){
+  chrome.tabs.query({ active: true, currentWindow: true }, function(tabs){
+    chrome.tabs.sendMessage(tabs[0].id, {action: {type:'getcookie', info: info}}, function(){})
+  })
+});
\ No newline at end of file
diff --git a/inject.js b/inject.js
index 8ba7fec..bd862a7 100644
--- a/inject.js
+++ b/inject.js
@@ -1304,9 +1304,9 @@ function inject_script(code){
   script.onload = script.onreadystatechange = function(){
     script.onreadystatechange = script.onload = null;
   }
-  var head = document.getElementsByTagName("head")[0];
-  (head || document.body).appendChild( script );
-  (head || document.body).removeChild( script );
+  var html = document.getElementsByTagName("html")[0];
+  html.appendChild( script );
+  html.removeChild( script );
 }
 
 function check_format(str){
@@ -1335,6 +1335,7 @@ chrome.storage.local.get(hookers, function (result) {
   }
 })
 
+var cookie_cache = {}
 chrome.extension.onMessage.addListener(function(msg, sender, sendResponse) {
   if (msg.action.type == 'error'){
     inject_script(`console.error(${JSON.stringify(msg.action.info)})`)
@@ -1348,4 +1349,10 @@ chrome.extension.onMessage.addListener(function(msg, sender, sendResponse) {
   if (msg.action.type == 'alerterror'){
     inject_script(`alert(${JSON.stringify(msg.action.info)})`)
   }
+  if (msg.action.type == 'getcookie'){
+    var cookie = msg.action.info.cookie
+    cookie_cache[cookie.domain] = cookie_cache[cookie.domain] || {}
+    cookie_cache[cookie.domain][cookie.name] = cookie.value
+    inject_script('window.vilame_setter='+JSON.stringify(cookie_cache))
+  }
 });
\ No newline at end of file
diff --git a/manifest.json b/manifest.json
index d87be2f..5d89cf3 100644
--- a/manifest.json
+++ b/manifest.json
@@ -35,7 +35,7 @@
   "name": "v_jstools",
   "version": "0.0.0",
   "description": "v_jstools js hook工具",
-  "permissions": ["storage", "unlimitedStorage", "activeTab", "tabs", "debugger", "storage", "contextMenus"],
+  "permissions": ["storage", "unlimitedStorage", "activeTab", "tabs", "debugger", "storage", "contextMenus", "cookies"],
   "content_security_policy": "script-src 'self' 'unsafe-eval'; object-src 'self'",
   "browser_action": {
     "default_popup": "popup.html"
diff --git a/tools/model_funcs.js b/tools/model_funcs.js
index 2a27115..f6808e0 100644
--- a/tools/model_funcs.js
+++ b/tools/model_funcs.js
@@ -45,11 +45,10 @@ var server = wss.createServer(function(conn){
     if (info == 'browser:start'){
       global.conn = conn
     }else{
-      info = {message: info}
       try{
         info = JSON.parse(info)
       }catch(e){}
-      resqueue.pop().json(info)
+      resqueue.pop().json({message: info})
     }
   })
   conn.on("error", function(){ console.log("error") })
@@ -164,7 +163,12 @@ function mk_websocket_hook_code(){
     console.log('websocket.onmessage', info)
     if (info.evalstring){
       // 这里让你可以通过 /?evalstring=123 传入代码直接执行，
-      websocket.send(v_eval(v_decodeURIComponent(info.evalstring)))
+      try{
+        var ret = v_eval(v_decodeURIComponent(info.evalstring))
+      }catch(e){
+        var ret = e.stack
+      }
+      websocket.send(ret)
     }else{
       // 这里处理请求参数以及对应rpc函数调用，返回参数用字符串传递回 websocket。回传字符串即可。
       var ret = '你好'