1 files changed, 15 insertions, 7 deletions
diff --git a/app/assets/javascripts/alert_handler.js b/app/assets/javascripts/alert_handler.js
index 8fffb61d1dd..26b0142f6a2 100644
--- a/app/assets/javascripts/alert_handler.js
+++ b/app/assets/javascripts/alert_handler.js
@@ -1,13 +1,21 @@
-// This allows us to dismiss alerts that we've migrated from bootstrap
-// Note: This ONLY works on alerts that are created on page load
+// This allows us to dismiss alerts and banners that we've migrated from bootstrap
+// Note: This ONLY works on elements that are created on page load
 // You can follow this effort in the following epic
 // https://gitlab.com/groups/gitlab-org/-/epics/4070
 
 export default function initAlertHandler() {
-  const ALERT_SELECTOR = '.gl-alert';
-  const CLOSE_SELECTOR = '.gl-alert-dismiss';
+  const DISMISSIBLE_SELECTORS = ['.gl-alert', '.gl-banner'];
+  const DISMISS_LABEL = '[aria-label="Dismiss"]';
+  const DISMISS_CLASS = '.gl-alert-dismiss';
 
-  const dismissAlert = ({ target }) => target.closest(ALERT_SELECTOR).remove();
-  const closeButtons = document.querySelectorAll(`${ALERT_SELECTOR} ${CLOSE_SELECTOR}`);
-  closeButtons.forEach(alert => alert.addEventListener('click', dismissAlert));
+  DISMISSIBLE_SELECTORS.forEach(selector => {
+    const elements = document.querySelectorAll(selector);
+    elements.forEach(element => {
+      const button = element.querySelector(DISMISS_LABEL) || element.querySelector(DISMISS_CLASS);
+      if (!button) {
+        return;
+      }
+      button.addEventListener('click', () => element.remove());
+    });
+  });
 }