我想知道如何制作WP3。5媒体上载程序返回2个或多个项目attachement? 即使选择了2个项目，它也始终运行一次。代码：

$(\'.button\').on(\'click\', function(){
     var send_attachment_backup = wp.media.editor.send.attachment;
          wp.media.editor.send.attachment = function(props, attachment){                                
               myFunction(attachment.url);
          wp.media.editor.send.attachment = send_attachment_backup;
     }
     wp.media.editor.open();
});