Fügen Sie dem Post-Thumbnail einen Klassennamen hinzu

Ja - Sie können die Klasse,die Sie verwendenmöchten,als Teil des Attributarguments an the_post_thumbnail() übergeben,z. B. <?php the_post_thumbnail('thumbnail', array('class' => 'your-class-name')); ?>

Ref: http://codex.wordpress.org/Function_Reference/the_post_thumbnail#Styling_Post_Thumbnails

Yep - you can pass the class you want to use to the_post_thumbnail() as part of the attributes argument, for example <?php the_post_thumbnail('thumbnail', array('class' => 'your-class-name')); ?>

Ref: http://codex.wordpress.org/Function_Reference/the_post_thumbnail#Styling_Post_Thumbnails

Sie können diese Klassenfiltern.

 function alter_attr_wpse_102158($attr) {
  remove_filter('wp_get_attachment_image_attributes','alter_attr_wpse_102158');
  $attr['class'] .= ' new-class';
  return $attr;
}
add_filter('wp_get_attachment_image_attributes','alter_attr_wpse_102158'); 
 

Fügen Sie den Filter hinzu,bevor Sie the_post_thumbnail aufrufen.Der Filterentfernt sich automatisch.

Esistein bisschen schwierig,dorthin zugelangen,aber the_post_thumbnail verwendet get_the_post_thumbnail ,der wp_get_attachment_image ,das diesen Filter anwendet.

You can filter those classes.

function alter_attr_wpse_102158($attr) {
  remove_filter('wp_get_attachment_image_attributes','alter_attr_wpse_102158');
  $attr['class'] .= ' new-class';
  return $attr;
}
add_filter('wp_get_attachment_image_attributes','alter_attr_wpse_102158'); 

Add the filter just before you call the_post_thumbnail. The filter will remove itself automatically.

It is a bit of trek to get there but the_post_thumbnail uses get_the_post_thumbnail which uses wp_get_attachment_image which applies that filter.

Ihr Bild-Tag hat keine Klasse. Schreiben Sieeinfach diesen Code <?php the_post_thumbnail(); ?>,aber Ihr Bild-Tag hateine Klasse. Schreiben Sieeinfach diesen Code

 <?php the_post_thumbnail('thumbnail', array(
'class' => 'class_name'

)); ?>
 

Your image tag have no class you just write this code <?php the_post_thumbnail(); ?> but your image tag have class you just write this code

<?php the_post_thumbnail('thumbnail', array(
'class' => 'class_name'

)); ?>