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WordPress无刷新AJAX点赞功能
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无插件点赞功能由 #Fatesinger# 提供,不过 @大发 好像删除了该篇文章。
实现原理大体是通过自定义字段保存赞数量,通过Cookie记录并禁止重复赞。
具体的代码如下:
演示网站:bizhi.k88ss.com
function.php
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 | /** * AJAX点赞 * by:www.k88.net * */ function dotGood() { global $wpdb, $post; $id = $_POST["um_id"]; if ($_POST["um_action"] == 'topTop') { $specs_raters = get_post_meta($id, 'dotGood', true); $expire = time() + 99999999; $domain = ($_SERVER['HTTP_HOST'] != 'localhost') ? $_SERVER['HTTP_HOST'] : false; // make cookies work with localhost setcookie('dotGood_' . $id, $id, $expire, '/', $domain, false); if (!$specs_raters || !is_numeric($specs_raters)) update_post_meta($id, 'dotGood', 1); else update_post_meta($id, 'dotGood', ($specs_raters + 1)); echo get_post_meta($id, 'dotGood', true); } die; } add_action('wp_ajax_nopriv_dotGood', 'dotGood'); add_action('wp_ajax_dotGood', 'dotGood'); add_filter( 'manage_posts_columns', 'add_dotGood_columns' ); add_action( 'manage_posts_custom_column', 'output_dotGood_columns', 10, 2 ); function add_dotGood_columns( $columns ){ // Add a new field $columns['zan'] = __( '点赞' ); // Delete an existing field, eg. comments /* unset( $columns['comments'] );*/ return $columns; } function output_dotGood_columns( $column_name, $post_id ){ switch( $column_name ){ case "zan" : // Retrieve data and echo result $zan = get_post_meta( $post_id, 'dotGood', true ); echo $zan; break; } } |
JavaScript
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 | $.fn.postLike = function () { if ($(this).hasClass('done')) { alert('点多了伤身体~'); return false; } else { $(this).addClass('done'); var id = $(this).data("id"), action = $(this).data('action'), rateHolder = $(this).children('.count'); var ajax_data = { action: "dotGood", um_id: id, um_action: action }; $.post("/wp-admin/admin-ajax.php", ajax_data, function (data) { $(rateHolder).html(data); }); return false; } }; $(".dotGood").click(function () { $(this).postLike(); }); |
CSS
1 2 3 4 5 | .post-like{margin:10% 0 0;position:relative;} .post-like a.dotGood{height:30px;line-height:30px;width:30px;font-size:24px;text-align:center;display:inline-block;cursor: pointer;position:relative;} .post-like a.dotGood.done{color: #e2264d;} .post-like a.dotGood span{position:absolute;display:inline-block;top:0;left:26px;width:auto;font-size:14px;} .post-like a.dotGood span:before{content:'+';} |
HTML
1 2 3 4 5 | <a data-action="topTop" data-id=""<?php">" class="dotGood <!--?php echo isset($_COOKIE['dotGood_' . $post->ID]) ? 'done' : ''; ?-->"> ? <!--?php echo ($dot_good=get_post_meta($post->ID, 'dotGood', true)) ? $dot_good : '0'; ?--> </a> |
效果图
WordPress无刷新AJAX点赞功能