背景圖片不出現在Wordpress中的博客頁面4.75

Question

任何人都可以告訴我功能圖片是如何出現在博客頁面上的。我在index.php中嵌入了我的博客，並且經歷了各種論壇，但無法讓圖像出現。我使用下面的代碼 -

<div id="main" > 


<section class="feature-image feature-image-default-alt" > 
    <h1 class="page-title">Blog</h1> 
</section> 

    <!-- BLOG CONTENT 
================================================== --> 
    <div class="container"> 
     <div class="row" id="primary"> 

     <main id="content" class="col-sm-8" role="main"> 

      <?php 
      if (have_posts()) : 

       if (is_home() && ! is_front_page()) : ?> 
        <header> 
         <h1 class="page-title screen-reader-text"><?php single_post_title(); ?></h1> 
        </header> 

       <?php 
       endif; 

       /* Start the Loop */ 
       while (have_posts()) : the_post(); 

        /* 
        * Include the Post-Format-specific template for the content. 
        * If you want to override this in a child theme, then include a file 
        * called content-___.php (where ___ is the Post Format name) and that will be used instead. 
        */ 
        get_template_part('template-parts/content', get_post_format()); 

       endwhile; 

       the_posts_navigation(); 

      else : 

       get_template_part('template-parts/content', 'none'); 

      endif; ?> 

     </main><!--content--> 

     <!-- SIDEBAR 
     ================================================== --> 
     <aside class="col-sm-4 asidebar"> 
       <?php get_sidebar();?> 
      </aside> 

    </div><!--primary--> 
</div><!--container--> 

Answer 1

的WordPress有一個函數：

while (have_posts()) : the_post(); 

    $featured_img_url = get_the_post_thumbnail_url(); 

    echo '<img src="'.$featured_img_url.'">'; 

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