wp posts ajax load more - php

Question

I tried to load more posts using ajax. I see there is lot of plugins and solutions in online and stackoverflow. But none of work for me. Actually I want to do this without plugin. So I can use this in different page archive or different page template where I need this code.
Here is my code that I got from another question in stackoverflow. My score is lower, so I can't comment out there.
Here is my index.php code:
<?php get_header(); ?>
<div class="ajax-posts">
<?php
$postsPerPage = 3;
$args = array(
'post_type' => 'post',
'posts_per_page' => $postsPerPage,
);
$loop = new WP_Query($args);
while ($loop->have_posts()) : $loop->the_post();
?>
<h2><?php the_title(); ?></h2>
<?php
endwhile;
echo '<a id="more_posts" href="#">Load More</a>';
wp_reset_postdata();
?>
</div>
<script type="text/javascript">
var ajaxUrl = "<?php echo admin_url('admin-ajax.php')?>";
var page = 1;.
var ppp = 3;
$("#more_posts").on("click",function(){
$("#more_posts").attr("disabled",true);
$.post(ajaxUrl, {
action:"more_post_ajax",
offset: (page * ppp) + 1,
ppp: ppp
}).success(function(posts){
page++;
$(".ajax-posts").append(posts); // CHANGE THIS!
$("#more_posts").attr("disabled",false);
});
});
</script>
<?php get_footer(); ?>
Here is functions.php code
<?php
function more_post_ajax(){
$offset = $_POST["offset"];
$ppp = $_POST["ppp"];
header("Content-Type: text/html");
$args = array(
'post_type' => 'post',
'posts_per_page' => $ppp,
'offset' => $offset,
);
$loop = new WP_Query($args);
while ($loop->have_posts()) { $loop->the_post();
the_title();
}
exit;
}
add_action('wp_ajax_nopriv_more_post_ajax', 'more_post_ajax');
add_action('wp_ajax_more_post_ajax', 'more_post_ajax');
?>
I don't know why posts not load or not work load more link. I hope someone will be help.
Ref: https://stackoverflow.com/a/31588401/5545813

Answer 1

The better way is to return an array with ur post title. Then display them after the success. If the array length < ppp (there is no more post).
$array_return = array();
$loop = new WP_Query($args);
while ($loop->have_posts()) { $loop->the_post();
$content = "<h1>" . get_the_title() . "</h1>";
$content .= "<div>" . get_the_content() . "</div>";
$content .= "<div>" . get_field("your_field") . "</div>";
$array_return[] = $content;
}
echo json_encode( $array_return );
die();
In your js script,
var posts = JSON.parse(posts);
for( var i = 0; i < posts.length; i++ )
$(".ajax-posts").append(posts[i]);
if( posts.length < ur_ppp )
$("#more_posts").fadeOut();
Something like that