jQuery(document).ready(function(){
    jQuery('.cl_link_buttons').val('id').click(function() {

            var currentid = jQuery(this).attr('id');

            //alert(currentid);
            console.log(currentid);

            jQuery.ajax ( data = {
                action: 'cleanlinks_ajax_get_post_data',
                url: ajaxurl,
                type: 'POST',
                dataType: 'text',
                "currentid" : currentid

            });

            jQuery.post(ajaxurl, data, function(response) {

                var dataz = response;
                alert( dataz );
                console.log (dataz); //show json in console


            });

            return false;

    }); //end click event
}); //end doc ready

add_action("wp_ajax_cleanlinks_ajax_get_post_data", "cleanlinks_ajax_get_post_data");
add_action("wp_ajax_nopriv_cleanlinks_ajax_get_post_data", "cleanlinks_ajax_get_post_data");

function cleanlinks_ajax_get_post_data() {

$from_ajax =  $_POST['currentid'];

echo "do" . $from_ajax . "something";

die();


}

var dataString = {lat: '55.56', lng: '25.35', action:'report_callback'};
 $.ajax({
        url: "http://domain.net/wp-admin/admin-ajax.php",
        type: "POST",
        //some times you cant try this method for sending action variable
        //action : 'report_callback',
        data:dataString,
        success: function(data){
            console.log(data);

            },
        error: function() {
            console.log("Error");
        }
    });

if ( empty( $_REQUEST['action'] ) ) {...}
Line 26

jQuery.post(ajaxurl, {action:'cleanlinks_ajax_get_post_data'}, function(response) {
     console.log (response);
});

function doAjax() {
    $result = getPosts();
    echo json_encode($result, true);
    die();
}

add_action( 'wp_ajax_my_action', [$object, 'my_method']);

wp_enqueue_script( 'search_js', get_template_directory_uri() . '/js/search.js', array( 'jquery' ), null, true );
    wp_localize_script( 'search_js', 'ajaxurl', admin_url( 'admin-ajax.php' ) );

$('#search_input').autocomplete({
    source: function(request, response) {

        $.ajax({
            type: 'POST',
            dataType: 'json',
            url: ajaxurl,
            data: 'action=my_custom_action_search&search_criteria=' + request.term,
            success: function(data) {
                response(data);
            },
            error: function(errorThrown){
                console.log(errorThrown);
            }
        });
    },
    minLength: 3
});

},
        error: function (xhr, status) {
            alert("Sorry, there was a problem!");
        },
        complete: function (xhr, status) {
            $('#showresults').slideDown('slow')
        }
        });
 });

if

function my_function(){
$id = $_POST['variation_id'];

    if(isset($_POST['variation_id'])) {


//your coded function


die();
}



}// end function