diff --git a/test/editor/pageobjects/nodes/core/core/80-function_page.js b/test/editor/pageobjects/nodes/core/core/80-function_page.js
index 56082c8a6..238ce06f9 100644
--- a/test/editor/pageobjects/nodes/core/core/80-function_page.js
+++ b/test/editor/pageobjects/nodes/core/core/80-function_page.js
@@ -28,8 +28,13 @@ functionNode.prototype.setFunction = function(func) {
     browser.click('#node-input-func-editor');
     browser.keys(['Control', 'Home', 'Control']);
     for (var i = 0; i < func.length; i++) {
-        browser.keys([func.substr(i, 1)]);
+        browser.keys([func.charAt(i)]);
     }
+    // Delete the unnecessary code that ace editor does the autocompletion.
+    browser.keys(['Control', 'Shift', 'End', 'Shift', 'Control']);
+    browser.keys(['Delete']);
+    // Need to wait until ace editor correctly checks the syntax.
+    browser.pause(50);
 }
 
 module.exports = functionNode;
diff --git a/test/editor/pageobjects/nodes/core/core/80-template_page.js b/test/editor/pageobjects/nodes/core/core/80-template_page.js
index a72be1347..01e3a6af3 100644
--- a/test/editor/pageobjects/nodes/core/core/80-template_page.js
+++ b/test/editor/pageobjects/nodes/core/core/80-template_page.js
@@ -25,11 +25,11 @@ function templateNode(id) {
 util.inherits(templateNode, nodePage);
 
 templateNode.prototype.setSyntax = function(syntax) {
-    browser.selectByValue('#node-input-syntax', syntax);
+    browser.selectWithWait('#node-input-syntax', syntax);
 }
 
 templateNode.prototype.setFormat = function(format) {
-    browser.selectByValue('#node-input-format', format);
+    browser.selectWithWait('#node-input-format', format);
 }
 
 templateNode.prototype.setTemplate = function(template) {
diff --git a/test/editor/pageobjects/nodes/core/io/21-httpin_page.js b/test/editor/pageobjects/nodes/core/io/21-httpin_page.js
index 7c81ae2d7..97648f395 100644
--- a/test/editor/pageobjects/nodes/core/io/21-httpin_page.js
+++ b/test/editor/pageobjects/nodes/core/io/21-httpin_page.js
@@ -25,7 +25,7 @@ function httpinNode(id) {
 util.inherits(httpinNode, nodePage);
 
 httpinNode.prototype.setMethod = function(method) {
-    browser.selectByValue('#node-input-method', method);
+    browser.selectWithWait('#node-input-method', method);
 }
 
 httpinNode.prototype.setUrl = function(url) {
diff --git a/test/editor/pageobjects/nodes/core/io/21-httprequest_page.js b/test/editor/pageobjects/nodes/core/io/21-httprequest_page.js
index d317ec103..b2ca812e3 100644
--- a/test/editor/pageobjects/nodes/core/io/21-httprequest_page.js
+++ b/test/editor/pageobjects/nodes/core/io/21-httprequest_page.js
@@ -29,11 +29,11 @@ httpRequestNode.prototype.setUrl = function(url) {
 }
 
 httpRequestNode.prototype.setMethod = function(method) {
-    browser.selectByValue('#node-input-method', method);
+    browser.selectWithWait('#node-input-method', method);
 }
 
 httpRequestNode.prototype.setReturn = function(ret) {
-    browser.selectByValue('#node-input-ret', ret);
+    browser.selectWithWait('#node-input-ret', ret);
 }
 
 module.exports = httpRequestNode;
diff --git a/test/editor/pageobjects/nodes/core/logic/15-change_page.js b/test/editor/pageobjects/nodes/core/logic/15-change_page.js
index 4d31c1b72..1336e8069 100644
--- a/test/editor/pageobjects/nodes/core/logic/15-change_page.js
+++ b/test/editor/pageobjects/nodes/core/logic/15-change_page.js
@@ -45,7 +45,7 @@ var ptType = {
 };
 
 function setT(t, index) {
-    browser.selectByValue('//*[@id="node-input-rule-container"]/li[' + index + ']/div/div[1]/select', t);
+    browser.selectWithWait('//*[@id="node-input-rule-container"]/li[' + index + ']/div/div[1]/select', t);
 }
 
 // It is better to create a function whose input value is the object type in the future,
diff --git a/test/editor/pageobjects/nodes/core/logic/16-range_page.js b/test/editor/pageobjects/nodes/core/logic/16-range_page.js
index 63fcd9df8..230929995 100644
--- a/test/editor/pageobjects/nodes/core/logic/16-range_page.js
+++ b/test/editor/pageobjects/nodes/core/logic/16-range_page.js
@@ -25,7 +25,7 @@ function rangeNode(id) {
 util.inherits(rangeNode, nodePage);
 
 rangeNode.prototype.setAction = function(action) {
-    browser.selectByValue('#node-input-action', action);
+    browser.selectWithWait('#node-input-action', action);
 }
 
 rangeNode.prototype.setRange = function(minin, maxin, minout, maxout) {
diff --git a/test/editor/pageobjects/util/util_page.js b/test/editor/pageobjects/util/util_page.js
index e2b6c3177..a53dae06a 100644
--- a/test/editor/pageobjects/util/util_page.js
+++ b/test/editor/pageobjects/util/util_page.js
@@ -38,6 +38,12 @@ function init() {
         var ret = browser.getText(selector);
         return ret;
     }, false);
+
+    browser.addCommand("selectWithWait", function(selector, value) {
+        browser.waitForVisible(selector, 5000);
+        var ret = browser.selectByValue(selector, value);
+        return ret;
+    }, false);
 }
 
  module.exports = {
diff --git a/test/editor/specs/scenario/cookbook_endpoint_uispec.js b/test/editor/specs/scenario/cookbook_endpoint_uispec.js
index f0eeea2fe..bb54da557 100644
--- a/test/editor/specs/scenario/cookbook_endpoint_uispec.js
+++ b/test/editor/specs/scenario/cookbook_endpoint_uispec.js
@@ -185,7 +185,7 @@ describe('cookbook', function() {
             var debugNode = workspace.addNode("debug", nodeWidth * 3, nodeHeight);
 
             changeNode.edit();
-            changeNode.ruleSet("headers", "msg", "{\"user-agent\":\"Mozilla/5.0 (Windows NT 10.0; Win64; x64)\"}", "json");
+            changeNode.ruleSet("headers", "msg", '{"user-agent":"Mozilla/5.0 (Windows NT 10.0; Win64; x64)"}', "json");
             changeNode.clickOk();
 
             httpRequestNode.edit();
@@ -280,7 +280,7 @@ describe('cookbook', function() {
             templateNode.edit();
             templateNode.setSyntax("mustache");
             templateNode.setFormat("handlebars");
-            templateNode.setTemplate("{ \"Hello\": \"World\" }");
+            templateNode.setTemplate('{ "Hello": "World" }');
             templateNode.clickOk();
 
             changeNode.edit();
@@ -440,7 +440,7 @@ describe('cookbook', function() {
             injectNode.clickOk();
 
             changeNode.edit();
-            changeNode.ruleSet("headers", "msg", "{\"content-type\":\"application/x-www-form-urlencoded\"}", "json");
+            changeNode.ruleSet("headers", "msg", '{"content-type":"application/x-www-form-urlencoded"}', "json");
             changeNode.clickOk();
 
             httpRequestNode.edit();
@@ -486,11 +486,11 @@ describe('cookbook', function() {
             var debugNode = workspace.addNode("debug", nodeWidth * 3, nodeHeight);
 
             injectNode.edit()
-            injectNode.setPayload("json", "{\"name\":\"Nick\"}");
+            injectNode.setPayload("json", '{"name":"Nick"}');
             injectNode.clickOk();
 
             changeNode.edit();
-            changeNode.ruleSet("headers", "msg", "{\"content-type\":\"application/json\"}", "json");
+            changeNode.ruleSet("headers", "msg", '{"content-type":"application/json"}', "json");
             changeNode.clickOk();
 
             httpRequestNode.edit();
@@ -531,13 +531,13 @@ describe('cookbook', function() {
             httpinNodeFormat.clickOk();
 
             functionNodeFormat.edit();
-            functionNodeFormat.setFunction("msg.payload = JSON.stringify(msg.req.cookies,null,4);");
+            functionNodeFormat.setFunction("msg.payload = JSON.stringify(msg.req.cookies,null,4);\nreturn msg;");
             functionNodeFormat.clickOk();
 
             templateNode.edit();
             templateNode.setSyntax("mustache");
             templateNode.setFormat("handlebars");
-            templateNode.setTemplate("<html>\n<head></head>\n<body>\n<h1>Cookies</h1>\n<p></p><a href=\"hello-cookie/add\">Add a cookie</a> &bull; <a href=\"hello-cookie/clear\">Clear cookies</a></p>\n<pre>{{ payload }}</pre>\n</body>\n</html>");
+            templateNode.setTemplate('<html>\n<head></head>\n<body>\n<h1>Cookies</h1>\n<p></p><a href="hello-cookie/add">Add a cookie</a> &bull; <a href="hello-cookie/clear">Clear cookies</a></p>\n<pre>{{ payload }}</pre>\n</body>\n</html>');
             templateNode.clickOk();
 
             httpinNodeFormat.connect(functionNodeFormat);
@@ -550,7 +550,7 @@ describe('cookbook', function() {
             httpinNodeAdd.clickOk();
 
             functionNodeAdd.edit();
-            functionNodeAdd.setFunction("msg.cookies = { };\n msg.cookies[\"demo-\"+(Math.floor(Math.random()*1000))] = Date.now();");
+            functionNodeAdd.setFunction('msg.cookies = { };\n msg.cookies["demo-"+(Math.floor(Math.random()*1000))] = Date.now();\nreturn msg;');
             functionNodeAdd.clickOk();
 
             changeNode.edit();
@@ -571,7 +571,7 @@ describe('cookbook', function() {
             httpinNodeClear.clickOk();
 
             functionNodeClear.edit();
-            functionNodeClear.setFunction("var cookieNames = Object.keys(msg.req.cookies).filter(function(cookieName) { return /^demo-/.test(cookieName);});\nmsg.cookies = {};\n\ncookieNames.forEach(function(cookieName) {\n    msg.cookies[cookieName] = null;\n});\n\n");
+            functionNodeClear.setFunction("var cookieNames = Object.keys(msg.req.cookies).filter(function(cookieName) { return /^demo-/.test(cookieName);});\nmsg.cookies = {};\n\ncookieNames.forEach(function(cookieName) {\n    msg.cookies[cookieName] = null;\n});\nreturn msg;\n");
             functionNodeClear.clickOk();
 
             httpinNodeClear.connect(functionNodeClear);
diff --git a/test/editor/specs/scenario/cookbook_uispec.js b/test/editor/specs/scenario/cookbook_uispec.js
index 834eadd02..20bc4fe39 100644
--- a/test/editor/specs/scenario/cookbook_uispec.js
+++ b/test/editor/specs/scenario/cookbook_uispec.js
@@ -364,11 +364,11 @@ describe('cookbook', function() {
             templateNode.edit();
             templateNode.setSyntax("mustache");
             templateNode.setFormat("handlebars");
-            templateNode.setTemplate("{\"title\": \"Hello\"}");
+            templateNode.setTemplate('{"title": "Hello"}');
             templateNode.clickOk();
 
             changeNodeSetHeader.edit();
-            changeNodeSetHeader.ruleSet("headers", "msg", "{\"content-type\":\"application/json\"}", "json");
+            changeNodeSetHeader.ruleSet("headers", "msg", '{"content-type":"application/json"}', "json");
             changeNodeSetHeader.clickOk();
 
             httpinNode.connect(templateNode);
@@ -413,7 +413,7 @@ describe('cookbook', function() {
             var debugNode = workspace.addNode("debug", nodeWidth * 3);
 
             functionNode.edit();
-            functionNode.setFunction("msg.payload = \"data to post\";");
+            functionNode.setFunction('msg.payload = "data to post";\nreturn msg;');
             functionNode.clickOk();
 
             httpRequetNode.edit();