<script type="text/javascript">
function doAjax(){
    var data1 = jQuery("#data1").val();
    var data2 = jQuery("#data2").val();

    var myajaxurl = '<?php echo admin_url('admin-ajax.php') ?>';
    var data = new FormData();

    //parametro action è richiesto da wp-ajax è l'hook usato per il match della funzione (wp_ajax_itc_sample_ajax o wp_ajax_nopriv_itc_sample_ajax)
    data.append('action','itc_sample_ajax');
    data.append('method', 'delet');
    data.append('data1', data1);
    data.append('data2', data2);


    jQuery.ajax({
	    url: myajaxurl,
	    data: data,
	    cache: false,
	    contentType: false,
	    processData: false,
	    type: 'POST',
	    error: function(json){
	    	console.log('error');
	    },
	    success: function(json){
	    	console.log(json);
	        var data = jQuery.parseJSON( json );
	        console.log(data);
	    }
	});



</script>


<?php
class ItcAjaxSample
{



    /**
     *
     * @var ItcAjaxSample
     */
    private static $instance = null;


    /**
     *
     * @return ItcAjaxSample
     */
    public static function get_instance() {
        if ( null == self::$instance ) {
            self::$instance = new self;
        }
        return self::$instance;

    }

    protected function __construct() {

	   add_shortcode( 'itc_ajax_sample',array($this,'do_ajax_sample'), 10, 2);
	   add_action( 'wp_enqueue_scripts', array($this,'enqueue_script') );

	   //solo se anche pubblico (no wp-admin)
  	  add_action( 'wp_ajax_nopriv_itc_sample_ajax', array($this,'itc_sample_ajax') );
	   //per wp-admin
	   add_action( 'wp_ajax_itc_sample_ajax', array($this,'itc_sample_ajax') );

    }

    public function do_ajax_sample($atts, $content = null ) {

	    $a = shortcode_atts( array(
	        'attr1' => null,
	    ), $atts );

	    $attr1 = $a["attr1"];

	    $path = plugin_dir_path(__FILE__) . 'templates/';

		//composer "league/plates": "^3.3"
		$templates = new League\Plates\Engine( $path , "tpl");


		$data = [];
		$data['title'] = "PROVA";
		$data['ajaxurl'] = admin_url('admin-ajax.php');

		$html = $templates->render('itc-pbx-innovaphone-reporting', $data);

		echo $html;

    }

    public function enqueue_script() {

    	wp_enqueue_script( 'itc_sample1', plugins_url() . '/myplugin/js/sample.js', array( 'jquery' ), '1.1.1', false );
    	wp_enqueue_script( 'itc_sample2', plugins_url() . '/myplugin/js/sample.js', array( 'jquery' ), '1.2.2', false );


    }


    public function itc_sample_ajax(){
      echo json_encode($_POST);
      die();
    }



}


$ItcPbxInnovaphoneReporting = ItcPbxInnovaphoneReporting::get_instance();