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WordPress无刷新AJAX点赞功能
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...
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10
2017/12

WordPress无刷新AJAX点赞功能

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:

function.php

/**

  • AJAX点赞
  • by: #fatesinger.com
  • modify: #biji.io #bgbk.org
    */

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');

JavaScript

$.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

.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

class="dotGood <?php echo isset($_COOKIE['dotGood_' . $post->ID]) ? 'done' : ''; ?>">

&hearts;
<span class="count"><?php echo ($dot_good=get_post_meta($post->ID, 'dotGood', true)) ? $dot_good : '0'; ?></span>

至此,点赞功能就可以实现了。

Last modification:December 10th, 2017 at 09:21 pm
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