此段函数实现了无插件点赞功能,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:
- 
//AJAX点赞 - 
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');
js 部分:
- 
//点赞 - 
$.fn.postLike = function () {
 - 
if ($(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();
 - 
});
 
代码引用部分:
- 
<a href="javascript:;" data-action="topTop" data-id="<?php the_ID(); ?>" class="dotGood <?php echo isset($_COOKIE['dotGood_' . $post->ID]) ? 'done' : ''; ?>">
 - 
<span class="count"><?php echo ($dot_good=get_post_meta($post->ID, 'dotGood', true)) ? $dot_good : '0'; ?></span>
 - 
</a> 
对于代码引用部分,还可以加点 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:'+';}
 
 - 
 
    		
            	
                
                
