contenthash

index.js

const namehash = require('eth-ens-namehash').hash
document.querySelector('input').value = 'matoken.eth'
window.namehash = namehash
var sayHello = function(){
  var name = document.querySelector('input').value
  console.log(namehash(name))
}

package.json

{
  "name": "requirebin-sketch",
  "version": "1.0.0",
  "dependencies": {
    "eth-ens-namehash": "2.0.8"
  }
}

page-head.html

<script>	

var sayHello = function(){
  var name = document.querySelector('input').value
   document.querySelector('.answer').textContent = window.namehash(name)
}
</script>

<h1>ENS to Namehash</h1>
<input placeholder="eg: matoken.eth"></input>
<button onClick="sayHello()" >hash it!</button>
<hr/>
<div class="answer"><div>