drag textreader

• demo https://codepen.io/gnjo/pen/eoZpbL
• encoding https://cdnjs.cloudflare.com/ajax/libs/encoding-japanese/1.0.29/encoding.min.js
• core https://codepen.io/gnjo/pen/ZZWWvp.js?textreader=1

let pre =document.getElementById('x');
textReader(pre,function(fileinfo,text){
  console.log(fileinfo,text)
  pre.innerHTML=text;
})

pre{
  width:90vw;
  min-height:500px;
  background-color:orange;
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/encoding-japanese/1.0.29/encoding.min.js"></script>
<script src="https://codepen.io/gnjo/pen/ZZWWvp.js?textreader=1"></script>
<!-- core -->
<pre id="x"></pre>