function getImage(url) {
  return new Promise(function(resolve, reject) {
    var img = new Image();
    img.onload = function() {
      resolve(url);
    };
    img.onerror = function() {
      reject(url);
    };
    img.src = url;
  });
}

getImage('my-image.png').then((url) function {
  document.getElementById('image-holder').innerHTML = `<img src="${url}" />`;
});