From: notmasteryet <async.processingjs@yahoo.com>
Date: Fri, 16 Dec 2011 02:44:55 +0000 (-0600)
Subject: Add compatibility for HTMLElement's dataset (#945)
X-Git-Url: https://git.parisson.com/?a=commitdiff_plain;h=d6e4607fd039c0f2ccb7c863d048cd4d9235ec9d;p=pdf.js.git

Add compatibility for HTMLElement's dataset (#945)
---

diff --git a/web/compatibility.js b/web/compatibility.js
index 7d1d725..e4e2f24 100644
--- a/web/compatibility.js
+++ b/web/compatibility.js
@@ -205,3 +205,15 @@
   });
 })();
 
+// HTMLElement dataset property
+(function checkDatasetProperty() {
+  var div = document.createElement('div');
+  if ('dataset' in div)
+    return; // dataset property exists
+  Object.defineProperty(HTMLElement.prototype, 'dataset', {
+    get: function htmlElementDatasetGetter() {
+      // adding dataset field to the actual object
+      return (this.dataset = {});
+    }
+  });
+})();