dist

js/dist/collapse.js

@@ -171,7 +171,11 @@
 
         if (this._parent) {
           actives = [].slice.call(this._parent.querySelectorAll(Selector.ACTIVES)).filter(function (elem) {
-            return elem.getAttribute('data-parent') === _this._config.parent;
+            if (typeof _this._config.parent === 'string') {
+              return elem.getAttribute('data-parent') === _this._config.parent;
+            }
+
+            return elem.classList.contains(ClassName.COLLAPSE);
           });
 
           if (actives.length === 0) {
@@ -308,7 +312,7 @@
       _proto._getParent = function _getParent() {
         var _this3 = this;
 
-        var parent = null;
+        var parent;
 
         if (Util.isElement(this._config.parent)) {
           parent = this._config.parent; // It's a jQuery object
@@ -329,12 +333,10 @@
       };
 
       _proto._addAriaAndCollapsedClass = function _addAriaAndCollapsedClass(element, triggerArray) {
-        if (element) {
-          var isOpen = $$$1(element).hasClass(ClassName.SHOW);
+        var isOpen = $$$1(element).hasClass(ClassName.SHOW);
 
-          if (triggerArray.length) {
-            $$$1(triggerArray).toggleClass(ClassName.COLLAPSED, !isOpen).attr('aria-expanded', isOpen);
-          }
+        if (triggerArray.length) {
+          $$$1(triggerArray).toggleClass(ClassName.COLLAPSED, !isOpen).attr('aria-expanded', isOpen);
         }
       }; // Static
 

js/dist/util.js

@@ -79,24 +79,13 @@
       },
       getSelectorFromElement: function getSelectorFromElement(element) {
         var selector = element.getAttribute('data-target');
-        var method = 'querySelector';
 
         if (!selector || selector === '#') {
-          selector = (element.getAttribute('href') || '').trim();
+          var hrefAttr = element.getAttribute('href');
+          selector = hrefAttr && hrefAttr !== '#' ? hrefAttr.trim() : '';
         }
 
-        var validSelector = selector;
-
-        if (selector.charAt(0) === '#' && selector.indexOf(',') === -1) {
-          selector = selector.substr(1);
-          method = 'getElementById';
-        }
-
-        try {
-          return document[method](selector) ? validSelector : null;
-        } catch (err) {
-          return null;
-        }
+        return selector && document.querySelector(selector) ? selector : null;
       },
       getTransitionDurationFromElement: function getTransitionDurationFromElement(element) {
         if (!element) {