diff --git a/output/cross.go b/output/cross.go
index 365ef15..5047e40 100644
--- a/output/cross.go
+++ b/output/cross.go
@@ -34,8 +34,8 @@ import (
 
 // CrossCompilationHandler handles request of cross compilation.
 func CrossCompilationHandler(w http.ResponseWriter, r *http.Request) {
-	data := map[string]interface{}{"succ": true}
-	defer util.RetJSON(w, r, data)
+	result := util.NewResult()
+	defer util.RetResult(w, r, result)
 
 	httpSession, _ := session.HTTPSession.Get(r, "wide-session")
 	if httpSession.IsNew {
@@ -50,7 +50,7 @@ func CrossCompilationHandler(w http.ResponseWriter, r *http.Request) {
 
 	if err := json.NewDecoder(r.Body).Decode(&args); err != nil {
 		logger.Error(err)
-		data["succ"] = false
+		result.Succ = false
 
 		return
 	}
@@ -101,7 +101,7 @@ func CrossCompilationHandler(w http.ResponseWriter, r *http.Request) {
 	stdout, err := cmd.StdoutPipe()
 	if nil != err {
 		logger.Error(err)
-		data["succ"] = false
+		result.Succ = false
 
 		return
 	}
@@ -109,12 +109,12 @@ func CrossCompilationHandler(w http.ResponseWriter, r *http.Request) {
 	stderr, err := cmd.StderrPipe()
 	if nil != err {
 		logger.Error(err)
-		data["succ"] = false
+		result.Succ = false
 
 		return
 	}
 
-	if !data["succ"].(bool) {
+	if !result.Succ {
 		return
 	}
 
@@ -141,7 +141,7 @@ func CrossCompilationHandler(w http.ResponseWriter, r *http.Request) {
 
 	if err := cmd.Start(); nil != err {
 		logger.Error(err)
-		data["succ"] = false
+		result.Succ = false
 
 		return
 	}
diff --git a/output/get.go b/output/get.go
index 52fabe8..958daa2 100644
--- a/output/get.go
+++ b/output/get.go
@@ -32,8 +32,8 @@ import (
 
 // GoGetHandler handles request of go get.
 func GoGetHandler(w http.ResponseWriter, r *http.Request) {
-	data := map[string]interface{}{"succ": true}
-	defer util.RetJSON(w, r, data)
+	result := util.NewResult()
+	defer util.RetResult(w, r, result)
 
 	httpSession, _ := session.HTTPSession.Get(r, "wide-session")
 	if httpSession.IsNew {
@@ -47,7 +47,7 @@ func GoGetHandler(w http.ResponseWriter, r *http.Request) {
 	var args map[string]interface{}
 	if err := json.NewDecoder(r.Body).Decode(&args); err != nil {
 		logger.Error(err)
-		data["succ"] = false
+		result.Succ = false
 
 		return
 	}
@@ -65,7 +65,7 @@ func GoGetHandler(w http.ResponseWriter, r *http.Request) {
 	stdout, err := cmd.StdoutPipe()
 	if nil != err {
 		logger.Error(err)
-		data["succ"] = false
+		result.Succ = false
 
 		return
 	}
@@ -73,12 +73,12 @@ func GoGetHandler(w http.ResponseWriter, r *http.Request) {
 	stderr, err := cmd.StderrPipe()
 	if nil != err {
 		logger.Error(err)
-		data["succ"] = false
+		result.Succ = false
 
 		return
 	}
 
-	if !data["succ"].(bool) {
+	if !result.Succ {
 		return
 	}
 
@@ -105,7 +105,7 @@ func GoGetHandler(w http.ResponseWriter, r *http.Request) {
 
 	if err := cmd.Start(); nil != err {
 		logger.Error(err)
-		data["succ"] = false
+		result.Succ = false
 
 		return
 	}
diff --git a/output/install.go b/output/install.go
index b485f59..1fc5b81 100644
--- a/output/install.go
+++ b/output/install.go
@@ -34,8 +34,8 @@ import (
 
 // GoInstallHandler handles request of go install.
 func GoInstallHandler(w http.ResponseWriter, r *http.Request) {
-	data := map[string]interface{}{"succ": true}
-	defer util.RetJSON(w, r, data)
+	result := util.NewResult()
+	defer util.RetResult(w, r, result)
 
 	httpSession, _ := session.HTTPSession.Get(r, "wide-session")
 	if httpSession.IsNew {
@@ -50,7 +50,7 @@ func GoInstallHandler(w http.ResponseWriter, r *http.Request) {
 
 	if err := json.NewDecoder(r.Body).Decode(&args); err != nil {
 		logger.Error(err)
-		data["succ"] = false
+		result.Succ = false
 
 		return
 	}
@@ -70,7 +70,7 @@ func GoInstallHandler(w http.ResponseWriter, r *http.Request) {
 	stdout, err := cmd.StdoutPipe()
 	if nil != err {
 		logger.Error(err)
-		data["succ"] = false
+		result.Succ = false
 
 		return
 	}
@@ -78,12 +78,12 @@ func GoInstallHandler(w http.ResponseWriter, r *http.Request) {
 	stderr, err := cmd.StderrPipe()
 	if nil != err {
 		logger.Error(err)
-		data["succ"] = false
+		result.Succ = false
 
 		return
 	}
 
-	if !data["succ"].(bool) {
+	if !result.Succ {
 		return
 	}
 
@@ -110,7 +110,7 @@ func GoInstallHandler(w http.ResponseWriter, r *http.Request) {
 
 	if err := cmd.Start(); nil != err {
 		logger.Error(err)
-		data["succ"] = false
+		result.Succ = false
 
 		return
 	}
diff --git a/output/run.go b/output/run.go
index 0dea317..a82fd9e 100644
--- a/output/run.go
+++ b/output/run.go
@@ -41,20 +41,20 @@ type outputBuf struct {
 
 // RunHandler handles request of executing a binary file.
 func RunHandler(w http.ResponseWriter, r *http.Request) {
-	data := map[string]interface{}{"succ": true}
-	defer util.RetJSON(w, r, data)
+	result := util.NewResult()
+	defer util.RetResult(w, r, result)
 
 	var args map[string]interface{}
 
 	if err := json.NewDecoder(r.Body).Decode(&args); err != nil {
 		logger.Error(err)
-		data["succ"] = false
+		result.Succ = false
 	}
 
 	sid := args["sid"].(string)
 	wSession := session.WideSessions.Get(sid)
 	if nil == wSession {
-		data["succ"] = false
+		result.Succ = false
 	}
 
 	filePath := args["executable"].(string)
@@ -70,13 +70,13 @@ func RunHandler(w http.ResponseWriter, r *http.Request) {
 	stdout, err := cmd.StdoutPipe()
 	if nil != err {
 		logger.Error(err)
-		data["succ"] = false
+		result.Succ = false
 	}
 
 	stderr, err := cmd.StderrPipe()
 	if nil != err {
 		logger.Error(err)
-		data["succ"] = false
+		result.Succ = false
 	}
 
 	outReader := bufio.NewReader(stdout)
@@ -84,14 +84,14 @@ func RunHandler(w http.ResponseWriter, r *http.Request) {
 
 	if err := cmd.Start(); nil != err {
 		logger.Error(err)
-		data["succ"] = false
+		result.Succ = false
 	}
 
 	wsChannel := session.OutputWS[sid]
 
 	channelRet := map[string]interface{}{}
 
-	if !data["succ"].(bool) {
+	if !result.Succ {
 		if nil != wsChannel {
 			channelRet["cmd"] = "run-done"
 			channelRet["output"] = ""
@@ -235,13 +235,13 @@ func RunHandler(w http.ResponseWriter, r *http.Request) {
 
 // StopHandler handles request of stoping a running process.
 func StopHandler(w http.ResponseWriter, r *http.Request) {
-	data := map[string]interface{}{"succ": true}
-	defer util.RetJSON(w, r, data)
+	result := util.NewResult()
+	defer util.RetResult(w, r, result)
 
 	var args map[string]interface{}
 	if err := json.NewDecoder(r.Body).Decode(&args); err != nil {
 		logger.Error(err)
-		data["succ"] = false
+		result.Succ = false
 
 		return
 	}
@@ -251,7 +251,7 @@ func StopHandler(w http.ResponseWriter, r *http.Request) {
 
 	wSession := session.WideSessions.Get(sid)
 	if nil == wSession {
-		data["succ"] = false
+		result.Succ = false
 
 		return
 	}
diff --git a/static/js/menu.js b/static/js/menu.js
index 92b3ad9..9b72578 100644
--- a/static/js/menu.js
+++ b/static/js/menu.js
@@ -186,10 +186,10 @@ var menu = {
             url: config.context + '/go/get',
             data: JSON.stringify(request),
             dataType: "json",
-            beforeSend: function (data) {
+            beforeSend: function () {
                 bottomGroup.resetOutput();
             },
-            success: function (data) {
+            success: function (result) {
             }
         });
     },
@@ -213,10 +213,10 @@ var menu = {
             url: config.context + '/go/install',
             data: JSON.stringify(request),
             dataType: "json",
-            beforeSend: function (data) {
+            beforeSend: function () {
                 bottomGroup.resetOutput();
             },
-            success: function (data) {
+            success: function (result) {
             }
         });
     },
@@ -241,10 +241,10 @@ var menu = {
             url: config.context + '/go/test',
             data: JSON.stringify(request),
             dataType: "json",
-            beforeSend: function (data) {
+            beforeSend: function () {
                 bottomGroup.resetOutput();
             },
-            success: function (data) {
+            success: function (result) {
             }
         });
     },
@@ -269,10 +269,10 @@ var menu = {
             url: config.context + '/go/vet',
             data: JSON.stringify(request),
             dataType: "json",
-            beforeSend: function (data) {
+            beforeSend: function () {
                 bottomGroup.resetOutput();
             },
-            success: function (data) {
+            success: function (result) {
             }
         });
     },
@@ -304,7 +304,7 @@ var menu = {
             url: config.context + '/build',
             data: JSON.stringify(request),
             dataType: "json",
-            beforeSend: function (result) {
+            beforeSend: function () {
                 bottomGroup.resetOutput();
             },
             success: function (result) {
@@ -336,7 +336,7 @@ var menu = {
             url: config.context + '/build',
             data: JSON.stringify(request),
             dataType: "json",
-            beforeSend: function (result) {
+            beforeSend: function () {
                 bottomGroup.resetOutput();
             },
             success: function (result) {
@@ -445,7 +445,7 @@ var menu = {
                         "editorTabSize": $editorTabSize.val(),
                         "keymap": $keymap.val()
                     });
-                    
+
                     if (config.keymap !== $keymap.val()) {
                         window.location.reload();
                     }
@@ -473,7 +473,7 @@ var menu = {
                             $editorTheme.data("value", $editorTheme.val());
                             $editorTabSize.data("value", $editorTabSize.val());
                             $keymap.data("value", $keymap.val());
-                            
+
                             // update the config
                             config.keymap = $keymap.val();
 
diff --git a/static/js/tree.js b/static/js/tree.js
index 5db3381..bf633f0 100644
--- a/static/js/tree.js
+++ b/static/js/tree.js
@@ -182,9 +182,9 @@ var tree = {
             url: config.context + '/cross',
             data: JSON.stringify(request),
             dataType: "json",
-            success: function (data) {
-                if (!data.succ) {
-                    $("#dialogAlert").dialog("open", data.msg);
+            success: function (result) {
+                if (!result.succ) {
+                    $("#dialogAlert").dialog("open", result.msg);
 
                     return false;
                 }
diff --git a/static/js/wide.js b/static/js/wide.js
index 5b94be6..32f1e91 100644
--- a/static/js/wide.js
+++ b/static/js/wide.js
@@ -617,7 +617,7 @@ var wide = {
                 url: config.context + '/build',
                 data: JSON.stringify(request),
                 dataType: "json",
-                beforeSend: function (result) {
+                beforeSend: function () {
                     bottomGroup.resetOutput();
                 },
                 success: function (result) {
@@ -650,7 +650,7 @@ var wide = {
             url: config.context + '/stop',
             data: JSON.stringify(request),
             dataType: "json",
-            success: function (data) {
+            success: function (result) {
                 $("#buildRun").removeClass("ico-stop")
                         .addClass("ico-buildrun").attr("title", config.label.build_n_run);
             }