use only dataset to get data attributes

diff --git a/js/src/dom/manipulator.js b/js/src/dom/manipulator.js
index b531a55868525aa0b08f0b104a3364c31896947a..5210f8b2c6825f7005b5589ad1ca29650a67c6ac 100644 (file)
--- a/js/src/dom/manipulator.js
+++ b/js/src/dom/manipulator.js
@@ -37,30 +37,12 @@ const Manipulator = {
   },
 
   getDataAttributes(element) {
-    if (typeof element === 'undefined' || element === null) {
+    if (!element) {
       return {}
     }
 
-    let attributes
-    if (Object.getOwnPropertyDescriptor(HTMLElement.prototype, 'dataset')) {
-      attributes = {
-        ...element.dataset
-      }
-    } else {
-      attributes = {}
-      for (let i = 0; i < element.attributes.length; i++) {
-        const attribute = element.attributes[i]
-
-        if (attribute.nodeName.indexOf('data-') !== -1) {
-          // remove 'data-' part of the attribute name
-          const attributeName = attribute
-            .nodeName
-            .substring('data-'.length)
-            .replace(/-./g, (str) => str.charAt(1).toUpperCase())
-
-          attributes[attributeName] = attribute.nodeValue
-        }
-      }
+    const attributes = {
+      ...element.dataset
     }
 
     Object.keys(attributes)