xhr or fetch for document

fetch

var url = ""
fetch(url).then(function(res){
  res.text().then(function(mytext){
    var doc = document.implementation.createHTMLDocument("")
    doc.body.insertAdjacentHTML = mytext
    console.log(doc)
  })
})

text.md

fetchは代替にはならない。timeoutやprogressは無い。
https://teratail.com/questions/40200

xhr

function get(url) {
  var xhr = new XMLHttpRequest()
  xhr.open("get", url)
  xhr.onload = function(res) {
    console.log(xhr)
  }
  //xhr.responseType = "document"
  xhr.setRequestHeader("content-type", "application/x-www-form-urlencoded;charset=UTF-8");
  xhr.withCredentials = true
  xhr.send(null)
}