Using typeof(MessageEvent) to switch two ways to create MessageEvent.

Author: gimite

web_socket.js

@@ -203,21 +203,19 @@
   };
 
   WebSocket.prototype.__createMessageEvent = function(type, data) {
-    if (document.createEvent && window.MessageEvent && !window.opera) {
+    if (window.MessageEvent && typeof(MessageEvent) == "function" && !window.opera) {
+      return new MessageEvent("message", {
+        "view": window,
+        "bubbles": false,
+        "cancelable": false,
+        "data": data
+      });
+    } else if (document.createEvent && window.MessageEvent && !window.opera) {
       var event = document.createEvent("MessageEvent");
-      if (event.initMessageEvent) {	// IE does not accept 'new MessageEvent' so this has to stay
-      	event.initMessageEvent("message", false, false, data, null, null, window, null);
-      } else if (event.initEvent) {	// needed for FF 26 and possible others soon...
-      	var event = new MessageEvent('message', {
-      		'view': window,
-      		'bubbles': false,
-      		'cancelable': false,
-      		'data': data
-      	});
-      }
+    	event.initMessageEvent("message", false, false, data, null, null, window, null);
       return event;
     } else {
-      // IE and Opera, the latter one truncates the data parameter after any 0x00 bytes.
+      // Old IE and Opera, the latter one truncates the data parameter after any 0x00 bytes.
       return {type: type, data: data, bubbles: false, cancelable: false};
     }
   };