morphdom with updating event handlers

morphdom_events.js

var yo = require('yo-yo')

var orig = yo`<button onclick=${function () {
  console.log('orig clicked!')
}}>click</button>`

setTimeout(function () {
  var newbutton = yo`<button onclick=${function () {
    console.log('new clicked!')
  }}>click new</button>`
  
  yo.update(orig, newbutton, {
    onBeforeMorphEl: function (fromEl, toEl) {
      fromEl.onclick = toEl.onclick
    }
  })
  
  // or newbutton.onclick = orig.onclick
}, 1000)

document.body.appendChild(orig)