This code Just Copy and past in JS file ---

jQuery(document).ready(function($) {
       jQuery('.btn1').click(function (){
       var target_id= jQuery(this).attr("name");
       var data = {
            'action': 'my_action',
            'content': target_id,      // We pass php values differently! id pass kiya hai
        };
        // We can also pass the url value separately from ajaxurl for front end AJAX implementations
        jQuery.post(ajax_object.ajaxurl, data, function(response) {
            jQuery('#show_data').html(response);
        });
        jQuery(this).click(function(){
            jQuery("#show_data").toggle();
          });
    });
    
  });


//main plugin file 

<?php    

/*

*Plugin Name:    Costom Post With Custom taxonomiy  

*Author :      shyam

*version : 2.0

*Author URI: https://sknetking9.blogspot.com/

*

*

 */

function crunchify_directors_custom_post_type() {

  $labels = array(

    'name'                => __( 'Directors' ),

    'singular_name'       => __( 'director'),

    'menu_name'           => __( 'directors'),

    'parent_item_colon'   => __( 'Parent director'),

    'all_items'           => __( 'All directors'),

    'view_item'           => __( 'View director'),

    'add_new_item'        => __( 'Add New director'),

    'add_new'             => __( 'Add New'),

    'edit_item'           => __( 'Edit director'),

    'update_item'         => __( 'Update director'),

    'search_items'        => __( 'Search director'),

    'not_found'           => __( 'Not Found'),

    'not_found_in_trash'  => __( 'Not found in Trash')

  );

  $args = array(

    'label'               => __( 'directors'),

    'description'         => __( 'Best Crunchify directors'),

    'labels'              => $labels,

    'supports'            => array( 'title', 'editor', 'excerpt', 'author', 'thumbnail', 'revisions', 'custom-fields'),

    'public'              => true,

    'hierarchical'        => false,

    'show_ui'             => true,

    'show_in_menu'        => true,

    'show_in_nav_menus'   => true,

    'show_in_admin_bar'   => true,

    'has_archive'         => true,

    'can_export'          => true,

    'exclude_from_search' => false,

          'yarpp_support'       => true,

    'taxonomies'        => array('post_tag'),

    'publicly_queryable'  => true,

    'capability_type'     => 'page'

);

  register_post_type( 'directors', $args );

}

add_action( 'init', 'crunchify_directors_custom_post_type', 0 );




add_action( 'init', 'crunchify_create_directors_custom_taxonomy', 0 );

 

//create a custom taxonomy name it "type" for your posts

function crunchify_create_directors_custom_taxonomy() {

 

  $labels = array(

    'name' => _x( 'Place', 'taxonomy general name' ),

    'singular_name' => _x( 'Place', 'taxonomy singular name' ),

    'search_items' =>  __( 'Search Places' ),

    'all_items' => __( 'All Places' ),

    'parent_item' => __( 'Parent Place' ),

    'parent_item_colon' => __( 'Parent Place:' ),

    'edit_item' => __( 'Edit Place' ), 

    'update_item' => __( 'Update Place' ),

    'add_new_item' => __( 'Add New Place' ),

    'new_item_name' => __( 'New Place Name' ),

    'menu_name' => __( 'Place' ),

  );

 

  register_taxonomy('Places',array('directors'), array(

    'hierarchical' => true,

    'labels' => $labels,

    'show_ui' => true,

    'show_admin_column' => true,

    'query_var' => true,

    'rewrite' => array( 'slug' => 'Group' ),

  ));


  $labels = array(

    'name' => _x( 'Group', 'taxonomy general name' ),

    'singular_name' => _x( 'Group', 'taxonomy singular name' ),

    'search_items' =>  __( 'Search Groups' ),

    'all_items' => __( 'All Groups' ),

    'parent_item' => __( 'Parent Group' ),

    'parent_item_colon' => __( 'Parent Group:' ),

    'edit_item' => __( 'Edit Group' ), 

    'update_item' => __( 'Update Group' ),

    'add_new_item' => __( 'Add New Group' ),

    'new_item_name' => __( 'New Group Name' ),

    'menu_name' => __( 'Group' ),

  );

 

  register_taxonomy('Group',array('directors'), array(

    'hierarchical' => true,

    'labels' => $labels,

    'show_ui' => true,

    'show_admin_column' => true,

    'query_var' => true,

    'rewrite' => array( 'slug' => 'Group' ),

  ));

}

function my_shortcode_function() { 


    $dir_args = array(

        'post_type' => 'directors',

        'order'   => 'ASC',

    );

    $show_dir_Posts = new WP_Query($dir_args);

    $title_data = '';

    while ($show_dir_Posts->have_posts()) { 

            $show_dir_Posts->the_post();

            $title_data .= the_title( '<th><button style="margin:5px;" class="btn1"  name="'.get_the_id().'">','</button></th>' );

            

          }

    wp_reset_postdata();

    return $title_data.'<div id="show_data"></div>';



} 

    add_shortcode('shortcode', 'my_shortcode_function');


  //  add_filter( 'the_title', function( $title ) { return  $title . '<button class="btn btn-primary" id="send">click</button>'; } );




// ajax requrst handel function

function task_enqueue_scripts() {

    /**

     * frontend ajax requests.

     */

   wp_enqueue_script( 'frontend-director-ajax', plugin_dir_url(__FILE__). 'reqajax.js', array('jquery'), null, true );  

   wp_localize_script( 'frontend-director-ajax', 'ajax_object',

        array( 

            'ajaxurl' => admin_url( 'admin-ajax.php' )

        )

    );



}

add_action( 'wp_enqueue_scripts', 'task_enqueue_scripts' );

// handel req of wpadmin re


add_action('wp_ajax_my_action', 'my_callback');


function my_callback() {

  $id = $_POST['content'];

  $my_postid = $id;//This is page id or post id

  $content_post = get_post($my_postid);

  $content = $content_post->post_content;

  // $content = apply_filters('the_content', $content); ab dekh kya hua hai???

  // $content = str_replace(']]>', ']]&gt;', $content);

  echo $content;


      wp_die();

}

?>