function addUser() {
  const usersPara = document.createElement("p");
  let xhr = new XMLHttpRequest();
  xhr.open("GET", "user.json", true);
  xhr.onload = function () {
    console.log(xhr.responseText);
    let obj = JSON.parse(xhr.responseText);
    if (this.status === 200) {
      usersPara.innerText = `${obj.name} , ${obj.age} , ${obj.status}, ${obj.class}`;

      defaultDIv.appendChild(usersPara);
    }
  };
  xhr.send();
}