es5-shim - npm Package Compare versions

Comparing version 4.1.5 to 4.1.6

bower.json

 {
     "name": "es5-shim",
-    "version": "4.1.5",
     "main": "es5-shim.js",
@@ -5,0 +4,0 @@ "repository": {

component.json

@@ -5,3 +5,3 @@ {
     "description": "ECMAScript 5 compatibility shims for legacy JavaScript engines",
-    "version": "v4.1.5",
+    "version": "v4.1.6",
     "keywords": [
@@ -8,0 +8,0 @@ "shim",

es5-sham.js

@@ -193,2 +193,60 @@ /*!
                         // Object.prototype.__proto__ === null
+
+    // Check for document.domain and active x support
+    // No need to use active x approach when document.domain is not set
+    // see https://github.com/es-shims/es5-shim/issues/150
+    // variation of https://github.com/kitcambridge/es5-shim/commit/4f738ac066346
+    /*global ActiveXObject */
+    var shouldUseActiveX = function shouldUseActiveX() {
+        // return early if document.domain not set
+        if (!document.domain) {
+            return false;
+        }
+
+        try {
+            return !!new ActiveXObject('htmlfile');
+        } catch (exception) {
+            return false;
+        }
+    };
+
+    // This supports IE8 when document.domain is used
+    // see https://github.com/es-shims/es5-shim/issues/150
+    // variation of https://github.com/kitcambridge/es5-shim/commit/4f738ac066346
+    var getEmptyViaActiveX = function getEmptyViaActiveX() {
+        var empty;
+        var xDoc;
+
+        xDoc = new ActiveXObject('htmlfile');
+
+        xDoc.write('<script><\/script>');
+        xDoc.close();
+
+        empty = xDoc.parentWindow.Object.prototype;
+        xDoc = null;
+
+        return empty;
+    };
+
+    // The original implementation using an iframe
+    // before the activex approach was added
+    // see https://github.com/es-shims/es5-shim/issues/150
+    var getEmptyViaIFrame = function getEmptyViaIFrame() {
+        var iframe = document.createElement('iframe');
+        var parent = document.body || document.documentElement;
+        var empty;
+
+        iframe.style.display = 'none';
+        parent.appendChild(iframe);
+        /*eslint-disable no-script-url */
+        iframe.src = 'javascript:';
+        /*eslint-enable no-script-url */
+
+        empty = iframe.contentWindow.Object.prototype;
+        parent.removeChild(iframe);
+        iframe = null;
+
+        return empty;
+    };
+
     /*global document */
@@ -206,12 +264,6 @@ if (supportsProto || typeof document === 'undefined') {
         createEmpty = function () {
-            var iframe = document.createElement('iframe');
-            var parent = document.body || document.documentElement;
-            iframe.style.display = 'none';
-            parent.appendChild(iframe);
-            /*eslint-disable no-script-url */
-            iframe.src = 'javascript:';
-            /*eslint-enable no-script-url */
-            var empty = iframe.contentWindow.Object.prototype;
-            parent.removeChild(iframe);
-            iframe = null;
+            // Determine which approach to use
+            // see https://github.com/es-shims/es5-shim/issues/150
+            var empty = shouldUseActiveX() ? getEmptyViaActiveX() : getEmptyViaIFrame();
+
             delete empty.constructor;
@@ -218,0 +270,0 @@ delete empty.hasOwnProperty;

es5-sham.min.js

 /*!
  * https://github.com/es-shims/es5-shim
  * @license es5-shim Copyright 2009-2015 by contributors, MIT License
- * see https://github.com/es-shims/es5-shim/blob/v4.1.5/LICENSE
+ * see https://github.com/es-shims/es5-shim/blob/v4.1.6/LICENSE
  */
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 //# sourceMappingURL=es5-sham.map

es5-shim.min.js

 /*!
  * https://github.com/es-shims/es5-shim
  * @license es5-shim Copyright 2009-2015 by contributors, MIT License
- * see https://github.com/es-shims/es5-shim/blob/v4.1.5/LICENSE
+ * see https://github.com/es-shims/es5-shim/blob/v4.1.6/LICENSE
  */
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package.json

 {
   "name": "es5-shim",
-  "version": "4.1.5",
+  "version": "4.1.6",
   "description": "ECMAScript 5 compatibility shims for legacy JavaScript engines",
@@ -5,0 +5,0 @@ "homepage": "http://github.com/es-shims/es5-shim/",

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