Merge pull request #182 from anthwinter/master

Only use XDomainRequest <= IE 9

lib/adapters/xhr.js

@@ -8,6 +8,7 @@ var buildURL = require('./../helpers/buildURL');
 var parseHeaders = require('./../helpers/parseHeaders');
 var transformData = require('./../helpers/transformData');
 var isURLSameOrigin = require('./../helpers/isURLSameOrigin');
+var ieVersion = require('./../helpers/ieVersion');
 var btoa = window.btoa || require('./../helpers/btoa');
 
 module.exports = function xhrAdapter(resolve, reject, config) {
@@ -34,7 +35,7 @@ module.exports = function xhrAdapter(resolve, reject, config) {
   var xDomain = false;
 
   // For IE 8/9 CORS support
-  if (!isURLSameOrigin(config.url) && window.XDomainRequest) {
+  if (ieVersion() <= 9 && !isURLSameOrigin(config.url) && window.XDomainRequest) {
     Adapter = window.XDomainRequest;
     loadEvent = 'onload';
     xDomain = true;

lib/helpers/ieVersion.js

@@ -0,0 +1,23 @@
+'use strict';
+
+/**
+ * https://gist.github.com/padolsey/527683
+ *
+ * A short snippet for detecting versions of IE in JavaScript
+ * without resorting to user-agent sniffing
+ *
+ * @returns {Number|undefined} Number of IE version (5-9), otherwise undefined
+ */
+module.exports = function ieVersion() {
+  var undef;
+  var v = 3;
+  var div = document.createElement('div');
+  var all = div.getElementsByTagName('i');
+
+  while ((
+    div.innerHTML = '<!--[if gt IE ' + (++v) + ']><i></i><![endif]-->',
+    all[0]
+  ));
+
+  return v > 4 ? v : undef;
+};