有没有办法确定何时使用JS加载了4张图像？

function loadImage(src) {
  return new Promise((resolve, reject) => {
    const img = new Image();
    img.src = src;
    img.onload = () => resolve(img);
    img.onerror = reject;
  });
}

async function loadImages(imageSources) {
  const images = [];
  for (const src of imageSources) {
    const img = await loadImage(src);
    images.push(img);
  }
  return images;
}

const imageSources = [
  'https://example.com/image1.jpg',
  'https://example.com/image2.jpg',
  'https://example.com/image3.jpg',
  'https://example.com/image4.jpg',
];

loadImages(imageSources).then(images => {
  console.log('所有图像已加载');
  // 在这里处理已加载的图像
});