[英]Uncaught SyntaxError: Unexpected token < in JSON at position
I am currently trying to make a system of "favorites".我目前正在尝试制作一个“收藏夹”系统。 It works correctly but in the console of my browser gives an error (image below) and I do not understand why it happens.它工作正常,但在我的浏览器控制台中出现错误(下图),我不明白它为什么会发生。
I tried to find solutions but I can not understand them at all.我试图找到解决方案,但我根本无法理解它们。 Can anyone help me?谁能帮我?
index.php
: index.php
:
<div class="blog-fav">
<i <?php if (userLiked($post['id'])): ?>
class="fas fa-heart favorite like-btn"
<?php else: ?>
class="fas fa-heart single like-btn"
<?php endif ?>
data-id="<?php echo $post['id'] ?>"></i>
</div>
scripts.js
: scripts.js
:
$(document).ready(function(){
$('.like-btn').on('click', function(){
var post_id = $(this).data('id');
$clicked_btn = $(this);
if ($clicked_btn.hasClass('single')) {
action = 'like';
} else if($clicked_btn.hasClass('favorite')){
action = 'unlike';
}
$.ajax({
url: 'index.php',
type: 'post',
data: {
'action': action,
'post_id': post_id
},
success: function(data){
res = JSON.parse(data);
if (action == "like") {
$clicked_btn.removeClass('favorite');
$clicked_btn.addClass('single');
} else if(action == "unlike") {
$clicked_btn.removeClass('single');
$clicked_btn.addClass('favorite');
}
}
});
});
});
The error I get:我得到的错误:
The problem is in the excerpt res = JSON.parse (data);
问题出在摘录res = JSON.parse (data);
, the return from AJAX is HTML, but you are treating it as JSON. ,从 AJAX 返回的是 HTML,但您将其视为 JSON。
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