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media/com_content/js/admin-articles-default-batch-footer.js

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+/**
+ * @copyright   (C) 2018 Open Source Matters, Inc. <https://www.joomla.org>
+ * @license     GNU General Public License version 2 or later; see LICENSE.txt
+ */
+((document, submitForm) => {
+
+  // Selectors used by this script
+  const buttonDataSelector = 'data-submit-task';
+  const formId = 'adminForm';
+
+  /**
+   * Submit the task
+   * @param task
+   */
+  const submitTask = task => {
+    const form = document.getElementById(formId);
+    if (form && task === 'article.batch') {
+      submitForm(task, form);
+    }
+  };
+
+  // Register events
+  document.addEventListener('DOMContentLoaded', () => {
+    const button = document.getElementById('batch-submit-button-id');
+    if (button) {
+      button.addEventListener('click', e => {
+        const task = e.target.getAttribute(buttonDataSelector);
+        submitTask(task);
+        return false;
+      });
+    }
+  });
+})(document, Joomla.submitform);