我在ie8工作时遇到了问题，我发现最后一个逗号是问题，但不知道如何解决。

这是当前代码。

<?php $args = array( \'post_type\' => \'katalog\', \'posts_per_page\' => 999 );
$loop = new WP_Query( $args ); 
if ($loop->have_posts()) : 
while ($loop->have_posts()) : $loop->the_post(); ?>

<?php global $post; $thumb=wp_get_attachment_image_src( get_post_thumbnail_id( $post->ID ), \'full\'); $thumb2=wp_get_attachment_image_src( get_post_thumbnail_id($post->ID), \'medium\'); $url = rwmb_meta( \'smb_katalozi\' ); ?>
{image : "<?php echo $thumb[0] ?> ", title : "<?php echo get_the_title() ?>", url : "<?php echo post_permalink( $url ); ?>"},

<?php endwhile; else: endif; ?>

输出是这样的

{image : "img url", title : "title", url : "url"},
{image : "img url", title : "title", url : "url"},

我希望是这样

{image : "img url", title : "title", url : "url"},
{image : "img url", title : "title", url : "url"}

所以，就最后一个逗号而言，它是不同的。

将其与此代码配合使用

<?php
    $args = array( \'post_type\' => \'katalog\', \'posts_per_page\' => 999 );
    $loop = new WP_Query( $args ); 
    $post_count = 0;
    $te = $loop->post_count;
    $total = $te-1;
    if ($loop->have_posts()) : 
    while ($loop->have_posts()) : $loop->the_post(); 
    global $post;  $thumb=wp_get_attachment_image_src( get_post_thumbnail_id( $post->ID ), \'full\'); $thumb2=wp_get_attachment_image_src( get_post_thumbnail_id($post->ID), \'medium\'); $url = rwmb_meta( \'smb_katalozi\' );
    if ($post_count == 0 || $post_count !== $total) { ?>
        {image : "<?php echo $thumb[0] ?> ", title : "<?php echo get_the_title() ?>", url : "<?php echo post_permalink( $url ); ?>"},
    <?php } if ($post_count == $total) { ?>
        {image : "<?php echo $thumb[0] ?> ", title : "<?php echo get_the_title() ?>", url : "<?php echo post_permalink( $url ); ?>"}
    <?php }
    $post_count++;
    endwhile; else: endif;
    ?>

global $post;

$data = array();

if ($loop->have_posts()) {
    while ($loop->have_posts()) {
        $loop->the_post();
        $thumb=wp_get_attachment_image_src( get_post_thumbnail_id( $post->ID ), \'full\');
        $thumb2=wp_get_attachment_image_src( get_post_thumbnail_id($post->ID), \'medium\');
        $url = rwmb_meta( \'smb_katalozi\' );

        $data[] = array (
            \'image\' => $thumb[0],
            \'title\' => get_the_title(),
            \'url\' => post_permalink( $url )
        );
    }
}

echo json_encode($data);

if ( $loop->have_posts() )
    echo \',\';

<span class="last-child">{image : "<?php echo $thumb[0] ?> ", title : "<?php echo get_the_title() ?>", url : "<?php echo post_permalink( $url ); ?>"}</span>

.last-child:after { content:", "; }
.last-child:last-child:after { content:"";}