> functions.php ``` add_action('wp_ajax_nopriv_bigfa_like', 'bigfa_like'); add_action('wp_ajax_bigfa_like', 'bigfa_like'); function bigfa_like() { global $wpdb,$post; $id = $_POST["um_id"]; $action = $_POST["um_action"]; if ( $action == 'ding') { $bigfa_raters = get_post_meta($id,'bigfa_ding',true); $expire = time() + 99999999; $domain = ($_SERVER['HTTP_HOST'] != 'localhost') ? $_SERVER['HTTP_HOST'] : false; // make cookies work with localhost setcookie('bigfa_ding_'.$id,$id,$expire,'/',$domain,false); if (!$bigfa_raters || !is_numeric($bigfa_raters)) { update_post_meta($id, 'bigfa_ding', 1); } else { update_post_meta($id, 'bigfa_ding', ($bigfa_raters + 1)); } echo get_post_meta($id,'bigfa_ding',true); } die; } ``` ***** ``` <script type="text/javascript"> $.fn.postLike = function() { if ($(this).hasClass('done')) { return false; } else { $(this).addClass('done'); var id = $(this).data("id"), action = $(this).data('action'), rateHolder = $(this).children('.count'); var ajax_data = { action: "bigfa_like", um_id: id, um_action: action }; $.post("/wp-admin/admin-ajax.php", ajax_data, function(data) { $(rateHolder).html(data); }); return false; } }; $(document).on("click", ".favorite", function() { $(this).postLike(); }); </script> ``` ***** > js文件 ``` <div class="post-like"> <a href="javascript:;" data-action="ding" data-id="<?php the_ID(); ?>" class="favorite<?php if(isset($_COOKIE['bigfa_ding_'.$post->ID])) echo ' done';?>"> 喜欢 <span class="count"> <?php if( get_post_meta($post-> ID,'bigfa_ding',true) ){ echo get_post_meta($post->ID,'bigfa_ding',true); } else { echo '0'; }?> </span> </a> </div> ``` ***** > HTML指定位置 ``` .post-like{text-align:center;padding:10px} .post-like a{background-color:#21759B;border-radius:3px;color:#FFFFFF;font-size:12px;padding:5px 10px;text-decoration:none;outline:none} .post-like a.done,.post-like a:hover{background-color:#eee;color:#21759B} .post-like a.done{cursor:not-allowed} ``` ***** > CSS代码