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How to Pass js Variable from php to Js, By drupal settings

Create the module.libraries.yml

at-story:
        js:
            js/at-story.js: {}
        dependencies:
          - core/jquery
          - core/jquery.once
          - core/drupalSettings

File : at-story.js
Drupal.behaviors.atjs = {
    attach: function (context, drupalSettings) {
        if (drupalSettings.at_story.node_published == false) {//not published
            if (drupalSettings.at_story.node_type == 'story') {
                $('#edit-title-0-value', context).keyup(function () {
                    var long_h = $(this).val();
                    $('#edit-field-story-short-headline-0-value').val(long_h);
                    $('#edit-field-app-headline-0-value').val(long_h);
                });
            }
        }
    }
};

module file where we load the file and varibales :
.module file
 if($form_id == 'node_story_edit_form' || $form_id == 'node_video_edit_form' || $form_id == 'node_photo_gallery_edit_form' || $form_id == 'node_breaking_news_edit_form'){
       if ($node = \Drupal::routeMatch()->getParameter('node')) {
        $form['#attached']['library'][] = 'at_story/at-story';
        $form['#attached']['drupalSettings']['at_story']['node_published'] = $node->isPublished();
        $form['#attached']['drupalSettings']['at_story']['node_type'] = $node->getType();
       }

How to add inline css and js in a page by drupal 8 :

  $load_more_btn = "#load_more_wrapper { text-align:center; }";  
   $form['#attached']['html_head'][] = [  
    [  
   '#tag' = 'style',  \\array
   '#value' = $load_more_btn,  \\array
  ],  
  'load-more-css'  
   ];  
   return $form;
It will add this tag in header:


 Same as Js , in place of style it would be script

How to use the Jquery within Ajax Responce : 

 use Drupal\Core\Ajax\AjaxResponse;  
 use Drupal\Core\Ajax\HtmlCommand;  
 use Drupal\Core\Ajax\InvokeCommand;  
 use Drupal\Core\Ajax\AlertCommand;  

 $response = new AjaxResponse();  
 //return the ajax return form with jquery  
 $response->addCommand(new HtmlCommand('#message-wrapper', $form['live_blog_container']));  
 $response->addCommand(new AlertCommand('Title or description, Anyone field is Required.'));  
 $response->addCommand(new InvokeCommand('.load_more_ajax', 'hide', array()));//hide is jquery function it could be any jquery function  
 InvokeCommand need three params:  
 1 - selector  
 2 - jquery function  
 3 - arguments of the function  
 like it  
 $response->addCommand(new InvokeCommand('#live_blog_title', 'addClass', array('my_new_class')));  
 $response->addCommand(new InvokeCommand("#load_more_limit", 'val', ['new_value']));//set the field value of id  
 return $response;



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