Adicionar maxlength em qualquer campo do admin

<?php add_action('admin_footer', 'add_maxlength_to_post_title'); function add_maxlength_to_post_title(){ ?> <script type="text/javascript"> jQuery( function($){ $('input#ID_ELEMENTO').attr('maxlength', 50); // numero de caracteres. modifique para o valor que quiser. }); </script> <?php } ?>

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