javascript - 无法在 WordPress 中将选择框显示为 ajax 响应

Question

我有两个下拉框，一个带有自定义分类法，另一个带有当前所选分类法下的自定义帖子。为此，我编写了一个 on-change 函数。我在显示输出时遇到一些问题它显示这样的输出

8Associate<select class="form-control" name="upload_designation" id="upload_designation" >

<option value="">Select Designation</option><option value=""></option></select>

而不是

<select class="form-control" name="upload_designation" id="upload_designation" >

<option value="">Select Designation</option>
<option value="8">Associate</option></select>

我在这里发布我的更改功能请帮我解决问题

function change_desgination() {
$post_val=explode("_",$_POST['id']);
$id=$post_val[0];
$taxonomy_name=$post_val[1];


$out='<select class="form-control" name="upload_designation" id="upload_designation" >
<option value="">Select Designation</option>';

    $args = array(
    'post_type' => 'designation',
    'post_status' => 'publish',
    'posts_per_page' => -1,
    'tax_query' => array(
        array(
            'taxonomy' => 'domain',
            'field' => 'slug',
            'terms' => $taxonomy_name
        )
    )
);
$the_query = new WP_Query( $args );

while ( $the_query->have_posts() ) : $the_query->the_post();
$theid=the_ID();
$thetitle=the_title();

  $out.='<option value="'.$theid.'">'.$thetitle.'</option>';

endwhile;
  $out.='</select>';
  die($out);
 } 

问题可能出在引号上。任何人请帮我找出问题所在。提前致谢。

Answer 1

问题在于

$theid=the_ID();
$thetitle=the_title();

the_ID() 和 the_title() 将回显这些值其中 get_the_ID(); 和 get_the_title(); 将以字符串形式返回值。所以我用了

$theid=get_the_ID();
$thetitle=get_the_title();

引用链接

https://wordpress.stackexchange.com/questions/48523/get-title-of-post-without-using-the-title

还有

https://developer.wordpress.org/reference/functions/get_the_id/