使用css/javascript在页面中所有图像的右上角动态放置一个按钮/div

.button {
  position: absolute;
  top: 0;
  right: 0;
}

var images = document.querySelectorAll('img');
images.forEach(function(image) {
  var button = document.createElement('div');
  button.classList.add('button');
  image.parentNode.appendChild(button);
});

.button {
  position: absolute;
  top: 0;
  right: 0;
  background-color: #ff0000;
  border: none;
  color: #ffffff;
  padding: 10px;
  cursor: pointer;
}

.button:hover {
  background-color: #00ff00;
}

var buttons = document.querySelectorAll('.button');
buttons.forEach(function(button) {
  button.addEventListener('click', function() {
    // 按钮点击事件处理逻辑
  });
});