オートカナ

<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<script src="<?php bloginfo('template_url') ?>/js/jquery.autoKana.js"></script>
<script>
$(document).ready(function(){
$.fn.autoKana('#name', '#kana', {katakana:true});
});
</script>