diff --git a/main/exercise/UniqueAnswerImage.php b/main/exercise/UniqueAnswerImage.php
index 51f5fc688b..1c61f878cd 100644
--- a/main/exercise/UniqueAnswerImage.php
+++ b/main/exercise/UniqueAnswerImage.php
@@ -68,10 +68,8 @@ class UniqueAnswerImage extends UniqueAnswer
             $html .= '<link rel="stylesheet" type="text/css" media="screen"
                 href="'.$finderFolder.'css/elfinder.full.css">';
             $html .= '<link rel="stylesheet" type="text/css" media="screen" href="'.$finderFolder.'css/theme.css">';
-
             $html .= '<!-- elFinder JS (REQUIRED) -->';
             $html .= '<script type="text/javascript" src="'.$finderFolder.'js/elfinder.full.js"></script>';
-
             $html .= '<!-- elFinder translation (OPTIONAL) -->';
             $language = 'en';
             $platformLanguage = api_get_interface_language();
@@ -86,7 +84,7 @@ class UniqueAnswerImage extends UniqueAnswer
             $html .= $includeFile;
 
             $html .= '<script type="text/javascript" charset="utf-8">
-            $(document).ready(function () {
+            $(function() {
                 $(".add_img_link").on("click", function(e){
                     e.preventDefault();
                     e.stopPropagation();
diff --git a/main/exercise/exercise.class.php b/main/exercise/exercise.class.php
index 529ecdb5b2..877d9fa8da 100755
--- a/main/exercise/exercise.class.php
+++ b/main/exercise/exercise.class.php
@@ -10242,7 +10242,7 @@ class Exercise
      *
      * @param array $categoriesAddedInExercise
      * @param array $question_list
-     * @param array $questions_by_category per category
+     * @param array $questions_by_category
      * @param bool  $flatResult
      * @param bool  $randomizeQuestions
      * @param array $questionsByCategoryMandatory
diff --git a/main/exercise/exercise_submit.php b/main/exercise/exercise_submit.php
index 0a4a0407a3..a2293607a1 100755
--- a/main/exercise/exercise_submit.php
+++ b/main/exercise/exercise_submit.php
@@ -88,7 +88,7 @@ if (isset($zoomOptions['options']) && !in_array($origin, ['embeddable', 'mobilea
     $options = $zoomOptions['options'];
     $htmlHeadXtra[] = '<script src="'.api_get_path(WEB_LIBRARY_JS_PATH).'jquery.elevatezoom.js"></script>';
     $htmlHeadXtra[] = '<script>
-        $(document).ready(function() {
+        $(function() {
             $("img").each(function() {
                 var attr = $(this).attr("data-zoom-image");
                 // For some browsers, `attr` is undefined; for others,
diff --git a/main/exercise/question.class.php b/main/exercise/question.class.php
index dd1ad23828..d5785539b6 100755
--- a/main/exercise/question.class.php
+++ b/main/exercise/question.class.php
@@ -1664,7 +1664,7 @@ abstract class Question
             echo $includeFile;
 
             echo '<script type="text/javascript" charset="utf-8">
-            $(document).ready(function () {
+            $(function() {
                 $(".create_img_link").click(function(e){
                     e.preventDefault();
                     e.stopPropagation();
diff --git a/main/inc/lib/CoursesAndSessionsCatalog.class.php b/main/inc/lib/CoursesAndSessionsCatalog.class.php
index 40969cad47..0926e70115 100644
--- a/main/inc/lib/CoursesAndSessionsCatalog.class.php
+++ b/main/inc/lib/CoursesAndSessionsCatalog.class.php
@@ -1278,7 +1278,7 @@ class CoursesAndSessionsCatalog
                 'a' => 'get_requirements',
                 'id' => $id,
                 'type' => $type,
-                'sid' => $sessionId
+                'sid' => $sessionId,
             ]
         );
 
diff --git a/main/lp/lp_view.php b/main/lp/lp_view.php
index 7c1208615b..7fa8d27d53 100755
--- a/main/lp/lp_view.php
+++ b/main/lp/lp_view.php
@@ -136,7 +136,7 @@ if (isset($zoomOptions['options']) && !in_array($origin, ['embeddable', 'noheade
     $options = $zoomOptions['options'];
     $htmlHeadXtra[] = '<script src="'.api_get_path(WEB_LIBRARY_JS_PATH).'jquery.elevatezoom.js"></script>';
     $htmlHeadXtra[] = '<script>
-        $(document).ready(function() {
+        $(function() {
             $("img").each(function() {
                 var attr = $(this).attr("data-zoom-image");
                 // For some browsers, `attr` is undefined; for others,