Update init scripts for dreamdata analytics

Author: przywartya

lib/init-script/init.js

@@ -1,4 +1,4 @@
-(function() {
+(function () {
     // Create a dummy analytics object until real loaded
     window.analytics || (window.analytics = []);
     window.analytics.methods = [
@@ -18,8 +18,8 @@
         'once',
         'off'
     ];
-    window.analytics.factory = function(method) {
-        return function() {
+    window.analytics.factory = function (method) {
+        return function () {
             var args = Array.prototype.slice.call(arguments);
             args.unshift(method);
             window.analytics.push(args);
@@ -32,7 +32,7 @@
     }
 
     // Load analytics async
-    analytics.load = function(callback) {
+    analytics.load = function (apiKey) {
         if (document.getElementById('dreamdata-analytics')) return;
 
         // We make a copy if our dummy object
@@ -42,38 +42,40 @@
         script.id = 'dreamdata-analytics';
         script.type = 'text/javascript';
         script.src = 'https://cdn.dreamdata.cloud/scripts/analytics/v1/dreamdata.min.js';
+
+        var onAnalyticsLoad = function () {
+            if (analytics && analytics.initialize) {
+                analytics.initialize({ 'Dreamdata.io': { apiKey: apiKey } });
+                // Now copy whatever we applied to our dummy object to the real analytics
+                while (window.a.length > 0) {
+                    var item = window.a.shift();
+                    var method = item.shift();
+                    if (analytics[method]) analytics[method].apply(analytics, item);
+                }
+            }
+        };
+
         if (script.addEventListener) {
             script.addEventListener(
                 'load',
-                function(e) {
-                    if (typeof callback === 'function') {
-                        callback(e);
-                    }
+                function () {
+                    onAnalyticsLoad();
                 },
                 false
             );
         } else {
             //IE8
-            script.onreadystatechange = function() {
+            script.onreadystatechange = function () {
                 if (this.readyState == 'complete' || this.readyState == 'loaded') {
-                    callback(window.event);
+                    onAnalyticsLoad();
                 }
             };
         }
         var first = document.getElementsByTagName('script')[0];
         first.parentNode.insertBefore(script, first);
     };
 
-    analytics.load(function() {
-        // On load init our integrations
-        analytics.initialize({ 'Dreamdata.io': { apiKey: '<API_KEY>' } });
-        // Now copy whatever we applied to our dummy object to the real analytics
-        while (window.a.length > 0) {
-            var item = window.a.shift();
-            var method = item.shift();
-            if (analytics[method]) analytics[method].apply(analytics, item);
-        }
-    });
+    analytics.load('<API_KEY>');
 
     analytics.page();
 })();