diff --git a/main/attendance/attendance_sheet.php b/main/attendance/attendance_sheet.php
index d0fe07f7de..3e8fbde23f 100755
--- a/main/attendance/attendance_sheet.php
+++ b/main/attendance/attendance_sheet.php
@@ -182,7 +182,7 @@ if (api_is_allowed_to_edit(null, true) ||
                 });
             }
 
-            $(document).ready(function() {
+            $(function() {
                 $("table.tableWithFloatingHeader").each(function() {
                     $(this).wrap("<div class=\"divTableWithFloatingHeader\" style=\"position:relative\"></div>");
 
diff --git a/main/auth/courses_categories.php b/main/auth/courses_categories.php
index 5f2f478f6b..696ec46d67 100755
--- a/main/auth/courses_categories.php
+++ b/main/auth/courses_categories.php
@@ -36,7 +36,7 @@ $code = isset($code) ? $code : null;
 
 ?>
 <script>
-    $(document).ready( function() {
+    $(function() {
         $('.star-rating li a').on('click', function(event) {
             var id = $(this).parents('ul').attr('id');
             $('#vote_label2_' + id).html("<?php echo get_lang('Loading'); ?>");
diff --git a/main/auth/inscription.php b/main/auth/inscription.php
index a5370b41ae..59aa5fdc2a 100755
--- a/main/auth/inscription.php
+++ b/main/auth/inscription.php
@@ -586,7 +586,7 @@ $allowDoubleValidation = api_get_configuration_value('allow_double_validation_in
 $formContainsSendButton = false;
 if ($allowDoubleValidation && $showTerms == false) {
     $htmlHeadXtra[] = '<script>
-        $(document).ready(function() {
+        $(function() {
             $("#pre_validation").click(function() {
                 $(this).hide();
                 $("#final_button").show();
diff --git a/main/auth/profile.php b/main/auth/profile.php
index 4066ea580a..016a084d21 100755
--- a/main/auth/profile.php
+++ b/main/auth/profile.php
@@ -40,7 +40,7 @@ $htmlHeadXtra[] = api_get_password_checker_js('#username', '#password1');
 $htmlHeadXtra[] = api_get_css_asset('cropper/dist/cropper.min.css');
 $htmlHeadXtra[] = api_get_asset('cropper/dist/cropper.min.js');
 $htmlHeadXtra[] = '<script>
-$(document).ready(function() {
+$(function() {
     $("#id_generate_api_key").on("click", function (e) {
         e.preventDefault();
 
@@ -332,7 +332,7 @@ $jquery_ready_content = $return['jquery_ready_content'];
 // the $jquery_ready_content variable collects all functions that
 // will be load in the $(document).ready javascript function
 $htmlHeadXtra[] = '<script>
-$(document).ready(function(){
+$(function() {
     '.$jquery_ready_content.'
 });
 </script>';
diff --git a/main/badge/assign.php b/main/badge/assign.php
index 74a1c5a0f8..516c13a0bc 100644
--- a/main/badge/assign.php
+++ b/main/badge/assign.php
@@ -418,7 +418,7 @@ if ($disableList) {
 }
 
 $htmlHeadXtra[] = '<script>
-$(document).ready(function() {
+$(function() {
     $("#skill").on("change", function() {
         $(location).attr("href", "'.$url.'&id="+$(this).val());
     });
diff --git a/main/course_home/course_home.php b/main/course_home/course_home.php
index b0eb4366b4..29a72a4ac4 100755
--- a/main/course_home/course_home.php
+++ b/main/course_home/course_home.php
@@ -34,7 +34,7 @@ require_once __DIR__.'/../inc/global.inc.php';
 
 $htmlHeadXtra[] = '<script>
 /* option show/hide thematic-block */
-$(document).ready(function(){
+$(function() {
     $("#thematic-show").click(function(){
         $(".btn-hide-thematic").hide();
         $(".btn-show-thematic").show(); //show using class
diff --git a/main/course_progress/index.php b/main/course_progress/index.php
index c066146815..67aea046cf 100755
--- a/main/course_progress/index.php
+++ b/main/course_progress/index.php
@@ -89,7 +89,7 @@ $default_thematic_plan_title = $thematic->get_default_thematic_plan_title();
 // Only when I see the 3 columns. Avoids double or triple click binding for onclick event
 
 $htmlHeadXtra[] = '<script>
-$(document).ready(function() {
+$(function() {
     $(".thematic_advance_actions, .thematic_tools ").hide();
 	$(".thematic_content").mouseover(function() {
 		var id = parseInt(this.id.split("_")[3]);
diff --git a/main/document/create_audio.php b/main/document/create_audio.php
index cc5ebc9af9..c2b544bae7 100755
--- a/main/document/create_audio.php
+++ b/main/document/create_audio.php
@@ -162,7 +162,7 @@ echo '</div>';
     <!-- javascript and styles for textareaCounter-->
     <script>
         var info;
-        $(document).ready(function () {
+        $(function() {
             var options = {
                 'maxCharacterSize': 100,
                 'originalStyle': 'originalTextareaInfo',
diff --git a/main/document/document.php b/main/document/document.php
index e26cd4014c..7f3bb0f326 100755
--- a/main/document/document.php
+++ b/main/document/document.php
@@ -778,7 +778,7 @@ function confirmation (name) {
     }
 }
 
-$(document).ready(function() {
+$(function() {
     $(".convertAction").click(function() {
         var id = $(this).attr("data-documentId");
         var format = $(this).attr("data-formatType");
@@ -944,7 +944,7 @@ if (!empty($documentAndFolders)) {
 
 $htmlHeadXtra[] = '
     <script>
-        $(document).ready( function() {
+        $(function() {
             //Experimental changes to preview mp3, ogg files'
             .$jquery.'
         });
@@ -2162,7 +2162,7 @@ $ajaxURL = api_get_path(WEB_AJAX_PATH).'document.ajax.php?a=get_document_quota&'
 
 if (count($documentAndFolders) > 1) {
     echo '<script>
-    $(document).ready(function() {
+    $(function() {
         $.ajax({
             url:"'.$ajaxURL.'",
             success:function(data){
diff --git a/main/dropbox/dropbox_functions.inc.php b/main/dropbox/dropbox_functions.inc.php
index 224460b08e..e7df9c5fbf 100755
--- a/main/dropbox/dropbox_functions.inc.php
+++ b/main/dropbox/dropbox_functions.inc.php
@@ -16,7 +16,7 @@ $htmlHeadXtra[] = '<script>
 function setFocus(){
     $("#category_title").focus();
 }
-$(document).ready(function () {
+$(function() {
     setFocus();
 });
 </script>';
diff --git a/main/exercise/exercise.class.php b/main/exercise/exercise.class.php
index f336342f7e..411fded084 100755
--- a/main/exercise/exercise.class.php
+++ b/main/exercise/exercise.class.php
@@ -3223,7 +3223,7 @@ class Exercise
                 openClockWarning();
             }
 
-			$(document).ready(function() {
+			$(function() {
 				// time in seconds when using minutes there are some seconds lost
                 var time_left = parseInt(".$time_left.");
                 $('#exercise_clock_warning').epiclock({
@@ -5498,7 +5498,7 @@ class Exercise
                                 <p><em>".get_lang('HotSpot')."</em></p>
                                 <div id=\"hotspot-solution-$questionId\"></div>
                                 <script>
-                                    $(document).on('ready', function () {
+                                    $(function() {
                                         new HotspotQuestion({
                                             questionId: $questionId,
                                             exerciseId: {$this->id},
diff --git a/main/exercise/exercise_admin.php b/main/exercise/exercise_admin.php
index 6f070ee37c..2e9535b46f 100755
--- a/main/exercise/exercise_admin.php
+++ b/main/exercise/exercise_admin.php
@@ -119,7 +119,7 @@ $htmlHeadXtra[] = '<script>
 function setFocus(){
     $("#exercise_title").focus();
 }
-$(document).ready(function () {
+$(function() {
     setFocus();
 });
 </script>';
diff --git a/main/exercise/exercise_report.php b/main/exercise/exercise_report.php
index c2d73dd169..cbb5aff0c1 100755
--- a/main/exercise/exercise_report.php
+++ b/main/exercise/exercise_report.php
@@ -495,7 +495,7 @@ $token = Security::get_token();
 $actions = Display::div($actions, ['class' => 'actions']);
 
 $extra = '<script>
-    $(document).ready(function() {
+    $(function() {
         $( "#dialog:ui-dialog" ).dialog( "destroy" );
         $( "#dialog-confirm" ).dialog({
                 autoOpen: false,
diff --git a/main/exercise/exercise_show.php b/main/exercise/exercise_show.php
index 0691206381..8f43c76a5f 100755
--- a/main/exercise/exercise_show.php
+++ b/main/exercise/exercise_show.php
@@ -489,7 +489,7 @@ foreach ($questionList as $questionId) {
                             <td colspan=\"2\">
                                 <div id=\"hotspot-solution-$questionId-$id\"></div>
                                 <script>
-                                    $(document).on('ready', function () {
+                                    $(function() {
                                         new HotspotQuestion({
                                             questionId: $questionId,
                                             exerciseId: {$objExercise->id},                                            
@@ -658,7 +658,7 @@ foreach ($questionList as $questionId) {
                             <td colspan=\"2\">
                                 <div id=\"hotspot-solution\"></div>
                                 <script>
-                                    $(document).on('ready', function () {
+                                    $(function() {
                                         new HotspotQuestion({
                                             questionId: $questionId,
                                             exerciseId: {$objExercise->id},
diff --git a/main/exercise/export/scorm/ScormQuestion.php b/main/exercise/export/scorm/ScormQuestion.php
index 60a8c003d3..a6f83f2b9f 100644
--- a/main/exercise/export/scorm/ScormQuestion.php
+++ b/main/exercise/export/scorm/ScormQuestion.php
@@ -196,7 +196,7 @@ class ScormQuestion extends Question
         $weight = $this->selectWeighting();
         $js = '
             questions.push('.$this->js_id.');
-            $(document).ready(function() {         
+            $(function() {     
                 if (exerciseInfo.randomAnswers == true) {
                     $("#question_'.$this->js_id.'").shuffleRows();                    
                 } 
diff --git a/main/exercise/hotpotatoes_exercise_report.php b/main/exercise/hotpotatoes_exercise_report.php
index 077bdd3c55..12278bad92 100755
--- a/main/exercise/hotpotatoes_exercise_report.php
+++ b/main/exercise/hotpotatoes_exercise_report.php
@@ -107,8 +107,7 @@ Display :: display_header($nameTools);
 $actions = Display::div($actions, ['class' => 'actions']);
 
 $extra = '<script>
-$(document).ready(function() {
-
+$(function() {
     $( "#dialog:ui-dialog" ).dialog( "destroy" );
     $( "#dialog-confirm" ).dialog({
         autoOpen: false,
diff --git a/main/exercise/hotspot_admin.inc.php b/main/exercise/hotspot_admin.inc.php
index ac026bb963..e35e3f377c 100755
--- a/main/exercise/hotspot_admin.inc.php
+++ b/main/exercise/hotspot_admin.inc.php
@@ -1109,7 +1109,7 @@ if (isset($modifyAnswers)) {
         </div>
     </form>
     <script>
-        $(document).on('ready', function () {
+        $(function() {
             <?php if ($answerType == HOT_SPOT_DELINEATION) {
         ?>
             new DelineationQuestion({
diff --git a/main/exercise/savescores.php b/main/exercise/savescores.php
index 8e9475c25e..f5a1b9bd0f 100755
--- a/main/exercise/savescores.php
+++ b/main/exercise/savescores.php
@@ -70,7 +70,7 @@ function save_scores($file, $score)
         global $jscript2run;
         //record the results in the learning path, using the SCORM interface (API)
         $jscript2run .= "<script>
-            $(document).ready(function() {
+            $(function() {
                 //API_obj = window.frames.window.content.API;
                 //API_obj = $('content_id').context.defaultView.content.API; //works only in FF
                 //API_obj = window.parent.frames.window.top.API;
diff --git a/main/exercise/showinframes.php b/main/exercise/showinframes.php
index bca02190fd..2a11a7ce4e 100755
--- a/main/exercise/showinframes.php
+++ b/main/exercise/showinframes.php
@@ -93,7 +93,7 @@ $htmlHeadXtra[] = <<<HTML
             iframe.height = maxheight;
         }
         
-        $(document).on('ready', function () {
+        $(function() {
             var iframe = document.getElementById('hotpotatoe');
             iframe.onload = function () {
                 // this.height = $(this.contentDocument.body).outerHeight(true)
diff --git a/main/forum/editpost.php b/main/forum/editpost.php
index 921db8ecac..346ebaa2ea 100755
--- a/main/forum/editpost.php
+++ b/main/forum/editpost.php
@@ -110,7 +110,7 @@ $table_link = Database::get_main_table(TABLE_MAIN_GRADEBOOK_LINK);
 /* Header */
 $htmlHeadXtra[] = <<<JS
     <script>
-    $(document).on('ready', function() {
+    $(function() {
         $('#reply-add-attachment').on('click', function(e) {
             e.preventDefault();
 
diff --git a/main/forum/editthread.php b/main/forum/editthread.php
index f6823334f3..3a8dd60651 100644
--- a/main/forum/editthread.php
+++ b/main/forum/editthread.php
@@ -123,7 +123,7 @@ $tableLink = Database::get_main_table(TABLE_MAIN_GRADEBOOK_LINK);
 /* Header */
 $htmlHeadXtra[] = <<<JS
     <script>
-    $(document).on('ready', function() {
+    $(function() {
         $('[name="thread_qualify_gradebook"]:checkbox').change(function () {
             if (this.checked) {
                 $('#options_field').show();
diff --git a/main/forum/forumqualify.php b/main/forum/forumqualify.php
index cb9c32b557..e5545d5f90 100755
--- a/main/forum/forumqualify.php
+++ b/main/forum/forumqualify.php
@@ -77,7 +77,7 @@ if (isset($_POST['idtextqualify'])) {
 
 /*     Including necessary files */
 $htmlHeadXtra[] = '<script>
-    $(document).ready(function(){
+    $(function() {
         $(\'.hide-me\').slideUp()
     });
 
diff --git a/main/forum/index.php b/main/forum/index.php
index 1cc2b375be..abc11c0671 100755
--- a/main/forum/index.php
+++ b/main/forum/index.php
@@ -30,7 +30,7 @@ api_protect_course_script(true);
 
 $current_course_tool = TOOL_FORUM;
 $htmlHeadXtra[] = '<script>
-$(document).ready(function() {
+$(function() {
     $(\'.hide-me\').slideUp();
 });
 
diff --git a/main/forum/newthread.php b/main/forum/newthread.php
index 38bfa3b87f..197a526d89 100755
--- a/main/forum/newthread.php
+++ b/main/forum/newthread.php
@@ -138,7 +138,7 @@ if (!empty($groupId)) {
 
 $htmlHeadXtra[] = "
     <script>
-        $(document).on('ready', function() {
+        $(function() {
             $('#reply-add-attachment').on('click', function(e) {
                 e.preventDefault();
     
diff --git a/main/forum/reply.php b/main/forum/reply.php
index e3a91f3e5d..8b208a5f42 100755
--- a/main/forum/reply.php
+++ b/main/forum/reply.php
@@ -132,7 +132,7 @@ if (!empty($groupId)) {
 /* Header */
 $htmlHeadXtra[] = <<<JS
     <script>
-    $(document).on('ready', function() {
+    $(function() {
         $('#reply-add-attachment').on('click', function(e) {
             e.preventDefault();
 
diff --git a/main/forum/viewforumcategory.php b/main/forum/viewforumcategory.php
index e9ab72fb73..64708411a1 100755
--- a/main/forum/viewforumcategory.php
+++ b/main/forum/viewforumcategory.php
@@ -32,7 +32,7 @@ Session::erase('_gid');
 api_protect_course_script(true);
 
 $htmlHeadXtra[] = '<script>
-$(document).ready(function(){
+$(function() {
     $(\'.hide-me\').slideUp()
 });
 
diff --git a/main/glossary/index.php b/main/glossary/index.php
index fde3f9f74c..489b7229a7 100755
--- a/main/glossary/index.php
+++ b/main/glossary/index.php
@@ -26,7 +26,7 @@ function setFocus(){
     $("#glossary_title").focus();
 }
 
-$(document).ready(function () {
+$(function() {
     setFocus();
     $( "#dialog:ui-dialog" ).dialog( "destroy" );
     $( "#dialog-confirm" ).dialog({
diff --git a/main/gradebook/get_badges.php b/main/gradebook/get_badges.php
index 91a834a2a5..1d45d2b247 100644
--- a/main/gradebook/get_badges.php
+++ b/main/gradebook/get_badges.php
@@ -56,7 +56,7 @@ $tpl = new Template(get_lang('Badges'), false, false);
 $tpl->assign(
     'content',
     "<script>
-    $(document).on('ready', function (){ 
+    $(function() {
         OpenBadges.issue_no_modal(".json_encode($assertions)."); 
     });
     </script>"
diff --git a/main/gradebook/gradebook.php b/main/gradebook/gradebook.php
index d8c1a184c5..c8b6927c5e 100755
--- a/main/gradebook/gradebook.php
+++ b/main/gradebook/gradebook.php
@@ -25,14 +25,14 @@ if (!empty($_GET['course'])) {
 $selectcat = isset($_GET['selectcat']) ? (int) $_GET['selectcat'] : 0;
 
 $htmlHeadXtra[] = '<script>
-$(document).ready( function() {
+$(function() {
 	for (i=0;i<$(".actions").length;i++) {
 		if ($(".actions:eq("+i+")").html()=="<table border=\"0\"></table>" || $(".actions:eq("+i+")").html()=="" || $(".actions:eq("+i+")").html()==null) {
 			$(".actions:eq("+i+")").hide();
 		}
 	}
- } );
- </script>';
+});
+</script>';
 api_block_anonymous_users();
 
 $htmlHeadXtra[] = '<script>
diff --git a/main/gradebook/gradebook_add_eval.php b/main/gradebook/gradebook_add_eval.php
index 28f9255c81..4f23c7a7fc 100755
--- a/main/gradebook/gradebook_add_eval.php
+++ b/main/gradebook/gradebook_add_eval.php
@@ -109,7 +109,7 @@ $interbreadcrumb[] = [
 $this_section = SECTION_COURSES;
 
 $htmlHeadXtra[] = '<script>
-$(document).ready( function() {
+$(function() {
     $("#hid_category_id").change(function() {
        $("#hid_category_id option:selected").each(function () {
            var cat_id = $(this).val();
diff --git a/main/gradebook/gradebook_add_link.php b/main/gradebook/gradebook_add_link.php
index d7d8be2691..1bfd0cd79b 100755
--- a/main/gradebook/gradebook_add_link.php
+++ b/main/gradebook/gradebook_add_link.php
@@ -175,7 +175,7 @@ $interbreadcrumb[] = [
 $this_section = SECTION_COURSES;
 
 $htmlHeadXtra[] = '<script>
-$(document).ready( function() {
+$(function() {
     $("#hide_category_id").change(function() {
        $("#hide_category_id option:selected").each(function () {
            var cat_id = $(this).val();
diff --git a/main/gradebook/gradebook_edit_eval.php b/main/gradebook/gradebook_edit_eval.php
index d6a08d43a3..380c91eb52 100755
--- a/main/gradebook/gradebook_edit_eval.php
+++ b/main/gradebook/gradebook_edit_eval.php
@@ -64,7 +64,7 @@ $interbreadcrumb[] = [
 ];
 
 $htmlHeadXtra[] = '<script>
-$(document).ready( function() {
+$(function() {
     $("#hid_category_id").change(function() {
        $("#hid_category_id option:selected").each(function () {
            var cat_id = $(this).val();
diff --git a/main/gradebook/gradebook_edit_link.php b/main/gradebook/gradebook_edit_link.php
index 3799ae206b..fb74dee9fe 100755
--- a/main/gradebook/gradebook_edit_link.php
+++ b/main/gradebook/gradebook_edit_link.php
@@ -124,7 +124,7 @@ $interbreadcrumb[] = [
 ];
 
 $htmlHeadXtra[] = '<script>
-$(document).ready( function() {
+$(function() {
     $("#hide_category_id").change(function() {
        $("#hide_category_id option:selected").each(function () {
            var cat_id = $(this).val();
diff --git a/main/gradebook/index.php b/main/gradebook/index.php
index 8199148414..4d634b97cf 100755
--- a/main/gradebook/index.php
+++ b/main/gradebook/index.php
@@ -94,7 +94,7 @@ function confirmation() {
 	}
 }
 
-$(document).ready(function() {
+$(function() {
     $("body").on("click", ".view_children", function() {
         var id = $(this).attr("data-cat-id");
         $(".hidden_"+id).removeClass("hidden");
diff --git a/main/group/group.php b/main/group/group.php
index 1acd901191..30bb0d720e 100755
--- a/main/group/group.php
+++ b/main/group/group.php
@@ -30,7 +30,7 @@ $sessionId = api_get_session_id();
 api_protect_course_script(true);
 
 $htmlHeadXtra[] = '<script>
-$(document).ready( function() {
+$(function() {
     var i;
 	for (i=0; i<$(".actions").length; i++) {
 		if ($(".actions:eq("+i+")").html()=="<table border=\"0\"></table>" || $(".actions:eq("+i+")").html()=="" || $(".actions:eq("+i+")").html()==null) {
diff --git a/main/group/group_category.php b/main/group/group_category.php
index 86a6d6c901..80cdbe7408 100755
--- a/main/group/group_category.php
+++ b/main/group/group_category.php
@@ -84,7 +84,7 @@ if (isset($_GET['id'])) {
 }
 
 $htmlHeadXtra[] = '<script>
-$(document).ready( function() {
+$(function() {
     $("#max_member").on("focus", function() {
         $("#max_member_selected").attr("checked", true);
     });
diff --git a/main/group/member_settings.php b/main/group/member_settings.php
index 7c06ca2e78..5a88eb2fda 100755
--- a/main/group/member_settings.php
+++ b/main/group/member_settings.php
@@ -115,7 +115,7 @@ function check_group_members($value)
 }
 
 $htmlHeadXtra[] = '<script>
-$(document).ready( function() {
+$(function() {
     $("#max_member").on("focus", function() {
         $("#max_member_selected").attr("checked", true);
     });
diff --git a/main/group/tutor_settings.php b/main/group/tutor_settings.php
index 325971ebbd..214f6dc889 100755
--- a/main/group/tutor_settings.php
+++ b/main/group/tutor_settings.php
@@ -99,7 +99,7 @@ function sort_users($user_a, $user_b)
 }
 
 $htmlHeadXtra[] = '<script>
-$(document).ready( function() {
+$(function() {
     $("#max_member").on("focus", function() {
         $("#max_member_selected").attr("checked", true);
     });
diff --git a/main/inc/ajax/lang.ajax.php b/main/inc/ajax/lang.ajax.php
index f03ae9b093..24cee86e3a 100644
--- a/main/inc/ajax/lang.ajax.php
+++ b/main/inc/ajax/lang.ajax.php
@@ -33,7 +33,7 @@ switch ($action) {
         $languageInfo = api_get_language_info($languageId);
 
         echo '
-            $(document).ready(function() {
+            $(function() {
                  '.$hideAll.'                 
                 var defaultLanguageFromUser = "'.$languageInfo['isocode'].'";                                
                 $("span:lang('.$languageInfo['isocode'].')").filter(
diff --git a/main/inc/lib/api.lib.php b/main/inc/lib/api.lib.php
index 13e87840e5..1f0e60d797 100644
--- a/main/inc/lib/api.lib.php
+++ b/main/inc/lib/api.lib.php
@@ -8094,7 +8094,7 @@ function api_get_password_checker_js($usernameInputId, $passwordInputId)
         same_as_username : \"".get_lang('YourPasswordCannotBeTheSameAsYourUsername')."\"
     };
 
-    $(document).ready(function() {
+    $(function() {
         var lang = ".json_encode($translations).";     
         var options = {        
             onLoad : function () {
diff --git a/main/inc/lib/document.lib.php b/main/inc/lib/document.lib.php
index 684897df91..3a7bc5e0fc 100644
--- a/main/inc/lib/document.lib.php
+++ b/main/inc/lib/document.lib.php
@@ -3455,7 +3455,7 @@ class DocumentManager
         if ($lp_id === false) {
             $url = $lpAjaxUrl.'?a=get_documents&lp_id=&cidReq='.$course_info['code'];
             $return .= "<script>
-            $(document).ready(function () {
+            $(function() {
                 $('.close_div').click(function() {
                     var course_id = this.id.split('_')[2];
                     var session_id = this.id.split('_')[3];
diff --git a/main/inc/lib/exercise.lib.php b/main/inc/lib/exercise.lib.php
index 9aab000eba..3e2cf92089 100644
--- a/main/inc/lib/exercise.lib.php
+++ b/main/inc/lib/exercise.lib.php
@@ -295,7 +295,7 @@ class ExerciseLib
                         RadioValidator(question_id, answer_id);
                     }
                     
-                    $(document).ready(function() {
+                    $(function() {
                         var ShowAlert = '';
                         var typeRadioB = '';
                         var question_id = $('input[name=question_id]').val();
@@ -1257,7 +1257,7 @@ HTML;
                                 if (!$freeze) {
                                     $s .= "
                                         <script>
-                                            $(document).on('ready', function() {
+                                            $(function() {
                                                 jsPlumb.ready(function() {
                                                     jsPlumb.connect({
                                                         source: 'window_$windowId',
@@ -1483,7 +1483,7 @@ HOTSPOT;
             $s .= "<div class=\"col-sm-8 col-md-9\">
                    <div class=\"hotspot-image\"></div>
                     <script>
-                        $(document).on('ready', function() {
+                        $(function() {
                             new ".($answerType == HOT_SPOT_DELINEATION ? 'DelineationQuestion' : 'HotspotQuestion')."({
                                 questionId: $questionId,
                                 exerciseId: $exe_id,
@@ -3037,7 +3037,7 @@ HOTSPOT;
             spanTag.addClass(optionClass);
         }
         
-        $(document).ready( function() {
+        $(function() {
             // Loading values
             $('.exercise_mark_select').on('loaded.bs.select', function() {
                 updateSelect($(this));
diff --git a/main/inc/lib/extra_field.lib.php b/main/inc/lib/extra_field.lib.php
index 4ef1a8a8ad..217ec02026 100755
--- a/main/inc/lib/extra_field.lib.php
+++ b/main/inc/lib/extra_field.lib.php
@@ -1656,7 +1656,7 @@ class ExtraField extends Model
                                     $deleteId = $field_details['variable'].'_delete';
                                     $form->addHtml("
                                         <script>
-                                            $(document).ready(function() {                                      
+                                            $(function() {                                     
                                                 $('#".$deleteId."').on('click', function() {
                                                     $.ajax({			
                                                         type: 'GET',
diff --git a/main/inc/lib/fixlinks.js b/main/inc/lib/fixlinks.js
index ba9c0155aa..a10833d6d9 100644
--- a/main/inc/lib/fixlinks.js
+++ b/main/inc/lib/fixlinks.js
@@ -1,4 +1,4 @@
-$(document).ready(function() {
+$(function() {
     var objects = $(document).find('object');
     var pathname = location.pathname;
     var coursePath = pathname.substr(0, pathname.indexOf('/courses/'));
diff --git a/main/inc/lib/formvalidator/Element/Color.php b/main/inc/lib/formvalidator/Element/Color.php
index 58fdf1ea4f..65acdf10dc 100644
--- a/main/inc/lib/formvalidator/Element/Color.php
+++ b/main/inc/lib/formvalidator/Element/Color.php
@@ -36,7 +36,7 @@ class Color extends HTML_QuickForm_text
     {
         return parent::toHtml().<<<JS
             <script>
-                $(document).on('ready', function () {
+                $(function() {
                     var txtColor = $('#{$this->getAttribute('id')}'),
                         lblColor = txtColor.parent().next();
 
diff --git a/main/inc/lib/formvalidator/FormValidator.class.php b/main/inc/lib/formvalidator/FormValidator.class.php
index afa1925ca5..d816193909 100755
--- a/main/inc/lib/formvalidator/FormValidator.class.php
+++ b/main/inc/lib/formvalidator/FormValidator.class.php
@@ -1622,7 +1622,7 @@ EOT;
             $this->addHtml('</div>');
 
             $this->addHtml("<script>            
-            $(document).on('ready', function() {
+            $(function() {
                 var defaultValue = '$defaultId';
                 $('#$typeNoDots').val(defaultValue);
                 $('#$typeNoDots').selectpicker('render');
diff --git a/main/inc/lib/pear/HTML/QuickForm/advmultiselect.php b/main/inc/lib/pear/HTML/QuickForm/advmultiselect.php
index cf6db17661..0c257533ad 100755
--- a/main/inc/lib/pear/HTML/QuickForm/advmultiselect.php
+++ b/main/inc/lib/pear/HTML/QuickForm/advmultiselect.php
@@ -919,7 +919,7 @@ class HTML_QuickForm_advmultiselect extends HTML_QuickForm_select
         '<input type="text" name="q" class="form-control" placeholder="'.addslashes(get_lang('Search')).'" /><br />';
 
         $js .= '<script>
-                $(document).ready(function() {
+                $(function() {
                     $(\'#'.$name.'\').multiselect({
                         search: {
                             left: \''.$search.'\',
diff --git a/main/inc/lib/social.lib.php b/main/inc/lib/social.lib.php
index 7167e070aa..7722955733 100755
--- a/main/inc/lib/social.lib.php
+++ b/main/inc/lib/social.lib.php
@@ -2904,7 +2904,7 @@ class SocialManager extends UserManager
 
         if ($countPost > self::DEFAULT_WALL_POSTS) {
             $htmlHeadXtra[] = '<script>
-            $(document).ready(function() {
+            $(function() {
                 var container = $("#wallMessages");
                 container.jscroll({
                     loadingHtml: "<div class=\"well_border\">'.get_lang('Loading').' </div>",
@@ -2966,8 +2966,8 @@ class SocialManager extends UserManager
                 });  
             } 
             
-            $(document).ready(function() {
-                timeAgo();  
+            $(function() {
+                timeAgo();
                 
                 /*$(".delete_message").on("click", function() {
                     var id = $(this).attr("id");
diff --git a/main/inc/lib/statistics.lib.php b/main/inc/lib/statistics.lib.php
index 256bb7d5ba..52753a2814 100644
--- a/main/inc/lib/statistics.lib.php
+++ b/main/inc/lib/statistics.lib.php
@@ -1130,7 +1130,7 @@ class Statistics
     {
         $chartCode = '
         <script>
-        $(document).ready(function() {
+        $(function() {
             $.ajax({
                 url: "'.$url.'",
                 type: "POST",
diff --git a/main/install/index.php b/main/install/index.php
index 44ada79fbf..ccfb9f0786 100755
--- a/main/install/index.php
+++ b/main/install/index.php
@@ -320,8 +320,7 @@ if ($encryptPassForm == '1') {
     <script type="text/javascript" src="../../web/assets/bootstrap/dist/js/bootstrap.min.js"></script>
     <script src="../../web/assets/bootstrap-select/dist/js/bootstrap-select.min.js"></script>
     <script type="text/javascript">
-        $(document).ready( function() {
-
+        $(function() {
             $("#details_button").click(function() {
                 $( "#details" ).toggle("slow", function() {
                 });
@@ -346,7 +345,7 @@ if ($encryptPassForm == '1') {
         });
 
         init_visibility=0;
-        $(document).ready( function() {
+        $(function() {
             $(".advanced_parameters").click(function() {
                 if ($("#id_contact_form").css("display") == "none") {
                     $("#id_contact_form").css("display","block");
@@ -631,7 +630,7 @@ if (@$_POST['step2']) {
         </p>
     </div>
     <script>
-        $(document).on('ready', function () {
+        $(function() {
             $.post('<?php echo api_get_path(WEB_CODE_PATH); ?>install/ajax.php', {
                 a: 'check_crs_tables',
                 db_host: '<?php echo $dbHostForm; ?>',
diff --git a/main/link/link.php b/main/link/link.php
index 9b6e31f387..3f33c5e335 100755
--- a/main/link/link.php
+++ b/main/link/link.php
@@ -25,7 +25,7 @@ $this_section = SECTION_COURSES;
 api_protect_course_script(true);
 
 $htmlHeadXtra[] = '<script>
-    $(document).ready( function() {
+    $(function() {
         for (i=0;i<$(".actions").length;i++) {
             if ($(".actions:eq("+i+")").html()=="<table border=\"0\"></table>" || $(".actions:eq("+i+")").html()=="" || $(".actions:eq("+i+")").html()==null) {
                 $(".actions:eq("+i+")").hide();
diff --git a/main/lp/lp_add_item.php b/main/lp/lp_add_item.php
index 1424e46097..7fac691d4c 100755
--- a/main/lp/lp_add_item.php
+++ b/main/lp/lp_add_item.php
@@ -159,7 +159,7 @@ function confirmation(name) {
     }
 }
 
-$(document).ready(function() {
+$(function() {
     jQuery('.scrollbar-inner').scrollbar();
 
     $('#subtab ').on('click', 'a:first', function() {
diff --git a/main/lp/lp_controller.php b/main/lp/lp_controller.php
index 1e1fc330ec..0628562965 100755
--- a/main/lp/lp_controller.php
+++ b/main/lp/lp_controller.php
@@ -62,7 +62,7 @@ $htmlHeadXtra[] = '
 
     // uncomment for some debug display utility
     /*
-    $(document).ready(function() {
+    $(function() {
         buildLPtree_debug($("#lp_item_list"), 0, 0);
         alert(lp_id_list+"\n\n"+lptree_debug);
     });
diff --git a/main/lp/lp_edit.php b/main/lp/lp_edit.php
index 96d8f5f427..d45713b3d2 100755
--- a/main/lp/lp_edit.php
+++ b/main/lp/lp_edit.php
@@ -284,13 +284,13 @@ echo Display::return_icon('course_setting_layout.png');
 echo '</div>';
 echo '</div>';
 echo "
-    <script>
-        $(document).on('ready', function () {
-            $('[name=\'hide_toc_frame\']').on('change', function() {
-                $('#pnl-frm').toggleClass('col-md-8').toggleClass('col-sm-12');
-                $('#pnl-toc').toggleClass('col-md-4').toggleClass('hide');
-            });
+<script>
+    $(function() {
+        $('[name=\'hide_toc_frame\']').on('change', function() {
+            $('#pnl-frm').toggleClass('col-md-8').toggleClass('col-sm-12');
+            $('#pnl-toc').toggleClass('col-md-4').toggleClass('hide');
         });
-    </script>
+    });
+</script>
 ";
 Display::display_footer();
diff --git a/main/lp/lp_edit_item.php b/main/lp/lp_edit_item.php
index c2c1057b7e..b262ca070d 100755
--- a/main/lp/lp_edit_item.php
+++ b/main/lp/lp_edit_item.php
@@ -22,7 +22,7 @@ $learnPath = Session::read('oLP');
 
 /* Header and action code */
 $htmlHeadXtra[] = '<script>'.$learnPath->get_js_dropdown_array().'
-$(document).on("ready", function() {
+$(function() {
     CKEDITOR.on("instanceReady", function (e) {
         showTemplates("content_lp");
     });
@@ -96,7 +96,7 @@ function confirmation(name) {
     }
 }
 
-$(document).ready(function() {
+$(function() {
     jQuery('.scrollbar-inner').scrollbar();
     expandColumnToogle('#hide_bar_template', {
         selector: '#lp_sidebar'
diff --git a/main/lp/lp_view.php b/main/lp/lp_view.php
index 4648d84666..71daebe583 100755
--- a/main/lp/lp_view.php
+++ b/main/lp/lp_view.php
@@ -126,7 +126,7 @@ $htmlHeadXtra[] = api_get_css_asset('qtip2/jquery.qtip.min.css');
 $htmlHeadXtra[] = api_get_asset('qtip2/jquery.qtip.min.js');
 $htmlHeadXtra[] = '<script type="text/javascript" src="'.api_get_path(WEB_LIBRARY_PATH).'javascript/jquery.frameready.js"></script>';
 $htmlHeadXtra[] = '<script>
-$(document).ready(function() {    
+$(function() {   
     $("div#log_content_cleaner").bind("click", function() {
         $("div#log_content").empty();
     });
@@ -137,7 +137,7 @@ var chamilo_xajax_handler = window.oxajax;
 $allowLpItemTip = api_get_configuration_value('hide_accessibility_label_on_lp_item') === false;
 if ($allowLpItemTip) {
     $htmlHeadXtra[] = '<script>
-    $(document).ready(function() {    
+    $(function() {   
          $(".scorm_item_normal").qtip({
             content: {
                 text: function(event, api) {
diff --git a/main/lp/scorm_api.php b/main/lp/scorm_api.php
index 6c085b744c..4a3875d916 100755
--- a/main/lp/scorm_api.php
+++ b/main/lp/scorm_api.php
@@ -223,7 +223,7 @@ var courseUrl = '?cidReq='+olms.lms_course_code+'&id_session='+olms.lms_session_
 addEvent(window, 'load', addListeners, false);
 
 // Initialize stuff when the page is loaded
-$(document).ready(function() {
+$(function() {
     logit_lms('document.ready event starts');
     logit_lms('These logs are generated by the main/lp/scorm_api.php JS '
         + 'library when the admin has clicked on the debug icon in the '
@@ -2273,7 +2273,7 @@ function attach_glossary_into_scorm(type) {
         }
 
         if (type == 'fix_links') {
-            $(document).ready(function() {
+            $(function() {
                 var objects = $("iframe").contents().find('object');
 
                 var pathname = location.pathname;
diff --git a/main/mySpace/exercise_category_report.php b/main/mySpace/exercise_category_report.php
index 4c9150bed1..35e88fab41 100644
--- a/main/mySpace/exercise_category_report.php
+++ b/main/mySpace/exercise_category_report.php
@@ -27,7 +27,7 @@ $defaults['course_id'] = $courseId;
 
 $htmlHeadXtra[] = api_get_jqgrid_js();
 $htmlHeadXtra[] = '<script>
-$(document).ready( function() {
+$(function() {
     $("#exercise_course_id").on("change", function(e) {        
         var data = $(this).select2(\'data\');
         var option = data[0];
diff --git a/main/mySpace/slider.js b/main/mySpace/slider.js
index fb3c0879c9..a88b821dee 100755
--- a/main/mySpace/slider.js
+++ b/main/mySpace/slider.js
@@ -31,7 +31,7 @@ function sliderClose()
     $(".slider").animate({"height": sliderHeight}, {duration: "fast" });
 }
 
-$(document).ready(function () {
+$(function() {
     // Show the slider content
     $('.slider').show();
     $('.slider').each(function () {
diff --git a/main/notebook/index.php b/main/notebook/index.php
index acb07ed3dc..30e8db73ac 100755
--- a/main/notebook/index.php
+++ b/main/notebook/index.php
@@ -26,7 +26,7 @@ $htmlHeadXtra[] = '<script>
 function setFocus(){
     $("#note_title").focus();
 }
-$(document).ready(function () {
+$(function() {
     setFocus();
 });
 </script>';
diff --git a/main/session/session_add.php b/main/session/session_add.php
index 7895cf7c31..9ff1a23738 100644
--- a/main/session/session_add.php
+++ b/main/session/session_add.php
@@ -84,7 +84,7 @@ $xajax->processRequests();
 $htmlHeadXtra[] = $xajax->getJavascript('../inc/lib/xajax/');
 $htmlHeadXtra[] = "
 <script>
-$(document).ready( function() {
+$(function() {
     accessSwitcher(0);
 });
 
diff --git a/main/session/session_edit.php b/main/session/session_edit.php
index d5806cb753..9ecea14e88 100644
--- a/main/session/session_edit.php
+++ b/main/session/session_edit.php
@@ -205,7 +205,7 @@ $form->display();
 ?>
 
 <script>
-$(document).ready( function() {
+$(function() {
 
 <?php
     if (!empty($sessionInfo['duration'])) {
@@ -239,7 +239,7 @@ function emptyDuration() {
     }
 }
 
-$(document).on('ready', function (){
+$(function() {
     $('#show-options').on('click', function (e) {
         e.preventDefault();
         var display = $('#options').css('display');
diff --git a/main/social/group_topics.php b/main/social/group_topics.php
index 6fd63958c0..1e650244cb 100755
--- a/main/social/group_topics.php
+++ b/main/social/group_topics.php
@@ -149,7 +149,7 @@ function add_image_form() {
 	}
 }
 
-$(document).ready(function() {
+$(function() {
 	if ($("#msg_'.$message_id.'").length) {
 		$("html,body").animate({
 			scrollTop: $("#msg_'.$message_id.'").offset().top
diff --git a/main/social/myfiles.php b/main/social/myfiles.php
index 252a0b5a24..2e57ae0c97 100755
--- a/main/social/myfiles.php
+++ b/main/social/myfiles.php
@@ -62,7 +62,7 @@ function register_friend(element_input) {
     }
 }
 
-$(document).on("ready", function () {
+$(function() {
     $("#el-finder")
         .elfinder({
             url: "'.api_get_path(WEB_LIBRARY_PATH).'elfinder/php/connector.php",
diff --git a/main/social/profile.php b/main/social/profile.php
index e7d6e3ec51..af399ee241 100755
--- a/main/social/profile.php
+++ b/main/social/profile.php
@@ -180,7 +180,7 @@ $socialAutoExtendLink = SocialManager::getAutoExtendLink($user_id, $countPost);
 
 // Added a Jquery Function to return the Preview of OpenGraph URL Content
 $htmlHeadXtra[] = '<script>
-$(document).ready(function() {
+$(function() {
     var getUrl = $("[name=\'social_wall_new_msg_main\']");
     var matchUrl = /https?:\/\/w{0,3}\w*?\.(\w*?\.)?\w{2,3}\S*|www\.(\w*?\.)?\w*?\.\w{2,3}\S*|(\w*?\.)?\w*?\.\w{2,3}[\/\?]\S*/ ;
 
diff --git a/main/survey/fillsurvey.php b/main/survey/fillsurvey.php
index 1f2913b8d6..1c3dcc9b0e 100755
--- a/main/survey/fillsurvey.php
+++ b/main/survey/fillsurvey.php
@@ -530,7 +530,7 @@ if ($survey_data['form_fields'] != '' &&
     // the $jquery_ready_content variable collects all functions
     // that will be load in the $(document).ready javascript function
     $htmlHeadXtra[] = '<script>
-    $(document).ready(function(){
+    $(function() {
         '.$jquery_ready_content.'
     });
     </script>';
diff --git a/main/survey/question.php b/main/survey/question.php
index ac28080c8f..6cfda9fafc 100755
--- a/main/survey/question.php
+++ b/main/survey/question.php
@@ -11,7 +11,7 @@
 require_once __DIR__.'/../inc/global.inc.php';
 
 $htmlHeadXtra[] = '<script>
-$(document).ready( function() {
+$(function() {
     $("button").click(function() {
         $("#is_executable").attr("value",$(this).attr("name"));
     });
diff --git a/main/ticket/new_ticket.php b/main/ticket/new_ticket.php
index 90a7ce7194..bebd0f4717 100644
--- a/main/ticket/new_ticket.php
+++ b/main/ticket/new_ticket.php
@@ -43,7 +43,7 @@ function updateCourseList(sessionId) {
     }, "json");    
 }
 
-$(document).on("ready", function () {    
+$(function() {  
     $("select#session_id").on("change", function () {        
         var sessionId = parseInt(this.value, 10);
         updateCourseList(sessionId);
diff --git a/main/ticket/report.php b/main/ticket/report.php
index aec524966a..bf30128e19 100644
--- a/main/ticket/report.php
+++ b/main/ticket/report.php
@@ -21,7 +21,7 @@ $this_section = 'Reports';
 Session::erase('this_section');
 
 $htmlHeadXtra[] = '<script>
-$(document).ready(function(){
+$(function() {
     $( "#keyword_start_date_start" ).datepicker({ dateFormat: '."'yy-mm-dd'".' });
     $( "#keyword_start_date_end" ).datepicker({ dateFormat: '."'yy-mm-dd'".' });
 });
diff --git a/main/ticket/ticket_details.php b/main/ticket/ticket_details.php
index c9b5bd1169..d38e6faf06 100644
--- a/main/ticket/ticket_details.php
+++ b/main/ticket/ticket_details.php
@@ -20,7 +20,7 @@ $interbreadcrumb[] = ['url' => '#', 'name' => get_lang('TicketDetail')];
 
 $disableReponseButtons = '';
 $htmlHeadXtra[] = '<script>
-$(document).ready(function() {
+$(function() {
 	$("#dialog-form").dialog({
 		autoOpen: false,
 		height: 450,
diff --git a/main/ticket/tickets.php b/main/ticket/tickets.php
index 2e60379579..4159bea7d5 100644
--- a/main/ticket/tickets.php
+++ b/main/ticket/tickets.php
@@ -36,7 +36,7 @@ function clear_course_list(div_course) {
     $("div#"+div_course).hide("");
 }
 
-$(document).ready(function() {
+$(function() {
     $("#advanced_search_form").css("display","none");
 });
 
diff --git a/main/ticket/tutor.php b/main/ticket/tutor.php
index fa92afb8ff..f8cef40e72 100644
--- a/main/ticket/tutor.php
+++ b/main/ticket/tutor.php
@@ -9,7 +9,7 @@ require_once __DIR__.'/../inc/global.inc.php';
 require_once __DIR__.'/tutor_report.lib.php';
 
 $htmlHeadXtra[] = '<script>
-$(document).ready(function (){
+$(function() {
     $(".ajax").click(function() {
         var url     = this.href;
         var dialog  = $("#dialog");
diff --git a/main/timeline/view.php b/main/timeline/view.php
index 64007c8fde..41cd3d7972 100755
--- a/main/timeline/view.php
+++ b/main/timeline/view.php
@@ -21,7 +21,7 @@ $htmlHeadXtra[] = api_get_css(api_get_path(WEB_LIBRARY_PATH).'javascript/timelin
 $htmlHeadXtra[] = api_get_js('timeline/timeline-min.js');
 $htmlHeadXtra[] = '
 <script>
-	$(document).ready(function() {
+	$(function() {
 		var timeline = new VMM.Timeline();
 		timeline.init("'.$url.'");
 	});
diff --git a/main/tracking/courseLog.php b/main/tracking/courseLog.php
index 4f81bcc40c..5ce4f34974 100755
--- a/main/tracking/courseLog.php
+++ b/main/tracking/courseLog.php
@@ -121,7 +121,7 @@ $js = "<script>
     // be sure that these columns always exists
     // see headers = array();
     // tab of header texts
-    $(document).ready( function() {
+    $(function() {
         init_hide();
         var columnsToHide = ".$columnsToHide.";
         if (columnsToHide) {
diff --git a/main/user/class.php b/main/user/class.php
index 20494cc4a6..24aa243861 100755
--- a/main/user/class.php
+++ b/main/user/class.php
@@ -30,7 +30,7 @@ $groupFilter = isset($_GET['group_filter']) ? intval($_GET['group_filter']) : 0;
 
 $htmlHeadXtra[] = '
 <script>
-$(document).ready( function() {
+$(function() {
     $("#group_filter").change(function() {
         window.location = "class.php?'.api_get_cidreq().'&type='.$type.'" +"&group_filter=" + $(this).val();
     });
diff --git a/main/wiki/index.php b/main/wiki/index.php
index 6e7bf79f0c..3ec902dd88 100755
--- a/main/wiki/index.php
+++ b/main/wiki/index.php
@@ -34,7 +34,7 @@ function setFocus() {
     $("#search_title").focus();
 }
 
-$(document).ready(function() {
+$(function() {
     setFocus();
     $("#start_date_toggle").click(function() {
         $("#start_date").toggle();
diff --git a/main/work/work.lib.php b/main/work/work.lib.php
index 8a8323c544..c58a6c359f 100755
--- a/main/work/work.lib.php
+++ b/main/work/work.lib.php
@@ -1005,7 +1005,7 @@ function to_javascript_work()
             $("#work_title").focus();
         }
 
-        $(document).ready(function() {
+        $(function() {
             setFocus();
             var checked = $("#expiry_date").attr("checked");
             if (checked) {
@@ -2101,7 +2101,7 @@ function get_work_user_list(
                     ';
 
                     $correction .= "<script>
-                    $(document).ready(function() {
+                    $(function() {
                         $('.work_correction_file_upload').each(function () {
                             $(this).fileupload({
                                 dropZone: $(this)