From 707762d29b3caef2ab8608cd2dbda5abecdab07e Mon Sep 17 00:00:00 2001
From: Leonid Nikitin <i@kor-elf.net>
Date: Fri, 26 Jul 2024 22:06:21 +0500
Subject: [PATCH] Site. Fixed an error in javascript when the page does not
 have a tag with the .documentation-version__button class.

---
 .../site/js/_choose-documentation-version.js     | 16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)

diff --git a/app/application/resources/site/js/_choose-documentation-version.js b/app/application/resources/site/js/_choose-documentation-version.js
index ba5ac52..06f7933 100644
--- a/app/application/resources/site/js/_choose-documentation-version.js
+++ b/app/application/resources/site/js/_choose-documentation-version.js
@@ -1,8 +1,10 @@
 let blockDocumentationVersion = document.querySelector('#documentation-version');
-blockDocumentationVersion.querySelector('.documentation-version__button').addEventListener('click', (e) => {
-    if (blockDocumentationVersion.classList.contains('active')) {
-        blockDocumentationVersion.classList.remove('active');
-    } else {
-        blockDocumentationVersion.classList.add('active');
-    }
-});
+if (blockDocumentationVersion) {
+    blockDocumentationVersion.querySelector('.documentation-version__button').addEventListener('click', (e) => {
+        if (blockDocumentationVersion.classList.contains('active')) {
+            blockDocumentationVersion.classList.remove('active');
+        } else {
+            blockDocumentationVersion.classList.add('active');
+        }
+    });
+}