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AJAX Wordpress Not Reading Variable

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Last Modified: 2017-03-14
I need to increase the number by 18 each time the AJAX it runs.  But it does not see the offset that I have created.
LINE 4 of the html grabs the offset
and passes it to line: 15  of the SCRIPT.

IN The PHP line:5 & 10  / offset does not seem to be set.

But Line:82  is updated with the correct number and is placed back on the page through the script

What am I doing wrong that the offset is not reading the number?
<?php
function be_ajax_load_more_all() {

$offset = isset($_POST['offt']) ? $_POST['offt'] : false;
$offset = intval($offset);

    $args = array(
        'nopaging' => true,
        'posts_per_page' => 18,
        'offset' => $offset,
        'post_type' => 'post',
        'post_status' => 'publish',
        'suppress_filters' => true
    );
    ob_start();
    $posts_array = get_posts($args);
    global $post;
    foreach ($posts_array as $post) {
        $field_name = "show_video";
        $id = $post->ID;
        $video = get_field($field_name, $id);
        $category = $category[0]->cat_name;
        $title = $post->post_title;
        $title = mb_strimwidth($title, 0, 50, '...');
        $tumbnail = get_the_post_thumbnail($id);
        $category = get_the_category();
        ?>      


        <div class="col-md-4 col-sm-6 col-xs-12">
            <div id="post-<?php echo $id; ?>" <?php post_class(); ?>>
                <div class="item" onclick="document.location.href = '<?php the_permalink($post->ID); ?>'; return false">

                    <div class="thumbnail">


        <?php
        if (!empty($video)) {
            echo '<div class="video-play">
                                            <img src="' . get_home_url() . '/wp-content/themes/surfline/img/playbtn.svg" alt="video" class="video-play-controller">
                                            </div>';
        }
        ?>   
                        <?php
                        $title = get_the_title();
                                        the_post_thumbnail($id, array( 'title' => $title,  'alt'   => $title )); 
                        ?>         </div>


                    <div class="meta">

        <?php
        foreach ($category as $c) {
            $cat_name = $c->cat_name;
            $cat_slug = $c->slug;
            echo '<a href="../' . $cat_slug . '">' . $cat_name . '</a>';
            break;
        }
        ?> 

                        <span><i class="fa fa-clock-o" aria-hidden="true"></i>&nbsp;<?php echo get_the_date('Y-m-d'); ?>  
        <?php
        $before = "| <strong>Updated</strong>&nbsp;";
        if (get_the_modified_time('U') != get_the_time('U')) {
            echo $before;
            echo human_time_diff(get_the_modified_date('U'), current_time('timestamp')) . ' ' . __('ago');
        }
        ?>
                        </span>

                    </div>
        <?php echo'<div class="headline">' . $title . '</div>'; ?>

                </div>
            </div>
        </div>
        <?php
    }
    //  END Foreach
$offset = $offset + 18;
    ?>
<div id="offsets" style="display:none;"><?php echo $offset; ?></div>
<?php
    wp_reset_postdata();
    $data = ob_get_clean();
    wp_send_json_success($data);
    wp_die();
}

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<script>
jQuery(function ($) {
    $('.post-listing-all').append('<span class="load-more"></span>');
    var button = $('.post-listing-all .load-more');
    var page = 2;
    var loading = false;
    var scrollHandling = {
        allow: true,
        reallow: function () {
            scrollHandling.allow = true;
        }
    };

    $(window).scroll(function () {
        var offt = $('#offsets').html()
        if (!loading && scrollHandling.allow) {
            scrollHandling.allow = false;
            setTimeout(scrollHandling.reallow, scrollHandling);
            var offset = $(button).offset().top - $(window).scrollTop();
            if (700 > offset) {
                loading = true;
                $('#loading-image').bind('ajaxStart', function(){
    $(this).show();
}).bind('ajaxStop', function(){
    $(this).hide();
});
                var data = {
                    action: 'be_ajax_load_more_all',
                    page: page,
                    offt:offt,
                    query: beloadmore.query,
                };
                $.post(beloadmore.url, data, function (res) {
                 $( "#offsets" ).remove();
                    if (res.success) {
                        $('.post-listing-all').append(res.data);
                        $('.post-listing-all').append(button);
                        page = page + 1;
                        loading = false;
                    } else {
                        //console.log(res);
                         //console.log('hi');
                    }
                }).fail(function (xhr, textStatus, e) {
                    //console.log(xhr.responseText);
                    //console.log('fail');
                });

            }
        }
    });
    
});

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<html>
<div id="offsets" style="display:none;">18</div>

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Commented:
It was this line: $offset = intval($offset);

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