查询查询运行得很好http://solucase.com/wp-json/wp/v2/posts?categories=38 但是，当我将其添加到循环函数以获取与该类别相关的所有帖子时，我会在检查链接技术时收到此错误，例如

function postsPerCat(cat_id) {

    $.ajax({
        method : \'GET\',
        dataType : \'json\',
        success : \'success\',
        url : "http://solucase.com/wp-json/wp/v2/posts?categories=\'cat_id\'",
    })
    .then(function (posts) {
        $.each(
            posts,
            function(key, val) {
                $(\'.recentposts\')
                    .append(
                        \'<div  class="post"  data-icon="false" onclick=postDetails(\'
                            + val.id
                            + \')><a   href="#postview"><img src=\'
                            + val._embedded[\'wp:featuredmedia\'][\'0\'].media_details.sizes.thumbnail.source_url
                            + \' ></img></a><h1 class="post_h1">\'
                            + val.title.rendered
                            + \'</h1></div>\'
                    )
                ;

                $(\'.recentposts\').listview(\'refresh\');
            }
        );
    });

}