我一直在following this 它几乎可以完美地工作，但它不仅可以根据我们在输入字段中所写的内容查找具有相同单词的标题帖子，而且可以查找所有帖子。

HTML

<input name="usp-title" id="usp-title" type="text" value="" data-required="true" required="required" maxlength="99" placeholder="Type here..." class="usp-input usp-input-title form-control">

阿贾克斯

add_action( \'wp_footer\', \'ajax_fetch\' );
function ajax_fetch() {
?>

<script type="text/javascript">

function fetch(){
console.log(jQuery(\'#usp-title\').val());
        jQuery.ajax({
            url: \'<?php echo admin_url(\'admin-ajax.php\'); ?>\',
            type: \'post\',
            data: { action: \'data_fetch\', exactwords:  jQuery(\'#usp-title\').val() },
            success: function(data) {
            var text1;
            var text1B;
            var text2;
            var text2B;
                    jQuery("#datafetch").html(data).promise().done(function(){
                        text1 = jQuery("#datafetch").find("h2").find("a").html();
                        text1B = text1.toLowerCase();
                text2 = jQuery(\'#usp-title\').val();
                        text2B = text2.toLowerCase();
                console.log(text1B);
                console.log(text2B);
                        if (text1B != text2B) {
                            jQuery("#componi").removeAttr("disabled", "disabled").show();
                            jQuery("#fatto").hide();
                            //jQuery(\'#datafetch\').empty();
                        } else if (text1B == text2B) {
                            jQuery("#componi").attr("disabled", "disabled").hide();
                        }
            });
            }
        });
}
</script>

PHP

add_action(\'wp_ajax_data_fetch\' , \'data_fetch\');
add_action(\'wp_ajax_nopriv_data_fetch\',\'data_fetch\');
function data_fetch(){

    $the_query = new WP_Query( array( \'posts_per_page\' => 1, \'s\' => esc_attr( $_POST[\'usp-title\'] ), \'post_type\' => \'post\' ) );
    if( $the_query->have_posts() ) : ?> 
       <div class="jumbotron">
        <h4>Abbiamo trovato già delle lezioni con lo stesso titolo,<br>usa una di questa o scrivi un titolo diverso.</h4>
    </div>
       <ul class="list-unstyled margin-top-80">
        <?php while( $the_query->have_posts() ): $the_query->the_post(); ?>
           <li>
        <?php $time = usp_get_meta(false, \'usp-custom-10\'); ?>
        <?php $space = usp_get_meta(false, \'usp-custom-3\'); ?>
        <?php $spaceB = usp_get_meta(false, \'usp-custom-7\'); ?>
            <h2><a target="_blank" href="<?php echo esc_url( post_permalink() ); ?>"><?php the_title();?></a></h2>
            <p><strong>Spazio:</strong> <?php echo $space;?> <?php echo $spaceB; ?></p>
         <p><strong>Tempo:</strong> <?php echo $time; ?></p>
         <?php the_excerpt(); ?>
           </li>
        <?php endwhile;
        wp_reset_postdata(); ?>
      </ul>
    <?php endif;

    die();
}

如何将结果限制为与输入字段中的文本具有相同标题的结果？

function searchAjax(){
  jQuery.ajax({
    url: \'<?php echo admin_url(\'admin-ajax.php\'); ?>\',
    type: \'post\',
    data: { action: \'data_fetch\', exactwords:  jQuery(\'#usp-title\').val() },
    success: function(data) {
      var text2;
      var text2B;
      text2 = jQuery(\'#usp-title\').val();
      text2B = text2.toLowerCase();
      jQuery("#datafetch").html(data).promise().done(function(){
        jQuery("#datafetch ul li h2 a").each(function() {
          var $this = jQuery(this);
          if ($this.text().toLowerCase() !== text2B) {
            $this.parent().parent().remove();
            jQuery(".jumbotron").remove();
            jQuery("#componi").removeAttr("disabled", "disabled").show();
          } else if ($this.text().toLowerCase() == text2B) {
            jQuery("#componi").attr("disabled", "disabled").hide();
          }
        });
      });
    }
  });
}