修复2.1以下版本重复点击节点报错问题

js/app.js

@@ -89,9 +89,9 @@ let app = new Vue({
         cacheDataLoading: false
     },
     methods: {
-        api: function(url, cb) {
+        api: function (url, cb) {
             let xhr = new XMLHttpRequest();
-            xhr.onreadystatechange = function() {
+            xhr.onreadystatechange = function () {
                 if (xhr.readyState == 4 && (xhr.status >= 200 && xhr.status < 400)) {
                     let response = xhr.responseText;
                     cb(JSON.parse(xhr.responseText));
@@ -100,7 +100,7 @@ let app = new Vue({
             xhr.open("GET", url, true);
             xhr.send();
         },
-        compareVersion: function(localVersion, remoteVersion) {
+        compareVersion: function (localVersion, remoteVersion) {
             let vL = localVersion.split('.');
             let vR = remoteVersion.split('.');
             for (let i = 0; i < vL.length; ++i) {
@@ -120,7 +120,7 @@ let app = new Vue({
                 return false;
             }
         },
-        checkVersion: function() {
+        checkVersion: function () {
             this.api('https://raw.githubusercontent.com/potato47/ccc-devtools/master/version.json', (
                 data) => {
                 let remoteVersion = data.version;
@@ -307,9 +307,9 @@ let app = new Vue({
         openDevMode() {
             setTimeout(() => {
                 if (!cc.Node.prototype.isLeaf) {
-                    cc.js.getset(cc.Node.prototype, 'isLeaf', function() {
+                    cc.js.getset(cc.Node.prototype, 'isLeaf', function () {
                         return this.childrenCount === 0;
-                    }, function(value) {
+                    }, function (value) {
 
                     }, false, true);
                 }
@@ -358,7 +358,7 @@ let app = new Vue({
         },
         handleChangeStats() {
             if (this.$data.isShowProfile) {
-                let addStats = function(stats) {
+                let addStats = function (stats) {
                     stats.dom.style.position = 'relative';
                     stats.dom.style.float = 'right';
                     stats.dom.style.marginLeft = '10px';
@@ -417,9 +417,9 @@ let app = new Vue({
         },
         initConsoleUtil() {
             if (cc.tree) return;
-            cc.tree = function(key) {
+            cc.tree = function (key) {
                 let index = key || 0;
-                let treeNode = function(node) {
+                let treeNode = function (node) {
                     let nameStyle =
                         `color: ${node.parent === null || node.activeInHierarchy ? 'green' : 'grey'}; font-size: 14px;font-weight:bold`;
                     let propStyle =
@@ -452,10 +452,10 @@ let app = new Vue({
                 }
                 return '属性依次为x,y,width,height,scale.使用cc.cat(id)查看详细属性.';
             }
-            cc.cat = function(key) {
+            cc.cat = function (key) {
                 let index = 0;
                 let target;
-                let sortId = function(node) {
+                let sortId = function (node) {
                     if (target) return;
                     if (cc.js.isNumber(key)) {
                         if (key === index++) {
@@ -481,9 +481,9 @@ let app = new Vue({
                 target['tempIndex'] = cc.js.isNumber(key) ? key : index;
                 return target;
             }
-            cc.list = function(key) {
+            cc.list = function (key) {
                 let targets = [];
-                let step = function(node) {
+                let step = function (node) {
                     if (node.name.toLowerCase().indexOf(key.toLowerCase()) > -1) {
                         targets.push(node);
                     }
@@ -501,7 +501,7 @@ let app = new Vue({
                     return targets;
                 }
             }
-            cc.where = function(key) {
+            cc.where = function (key) {
                 let target = key.name ? key : cc.cat(key);
                 if (!target) {
                     return null;
@@ -542,7 +542,7 @@ let app = new Vue({
             // console.log(val);
         }
     },
-    created: function() {
+    created: function () {
         this.checkVersion();
         document.body.insertBefore(document.getElementById('app'), document.body.firstChild);