提取包含base64图像的页面

Question

我正在尝试获取包含产品的Google购物页面，我需要获取缩略图。问题在于，以base64编码的图像和响应在图像的src属性中包含缩短的代码。除了完整的代码，还有///////

src="data:image/gif;base64,R0lGODlhAQABAIAAAP///////yH5BAEKAAEALAAAAAABAAEAAAICTAEAOw=="

这是我的代码

let title = "RockDove Men's Original Two-Tone Memory Foam Slipper";
let urlparse = "https://www.google.com/search?tbm=shop&tbs=vw:g&q=" +
encodeURIComponent(title);

fetch(urlparse)
  .then(data => {
    return data.text();
  })
  .then(htmlString => {
    // parsing html string into DOM
    let parser = new DOMParser();
    let doc = parser.parseFromString(htmlString, "text/html");

    // retrieve products data from DOM
    let products = doc.querySelectorAll(".sh-pr__product-results > div");
    let productsArr = Array.prototype.slice.call(products);

    let productsData = productsArr.map(el => {
      return el.querySelector(".sh-dgr__thumbnail").innerHTML;
    });
    console.log(productsData);
  });

我还尝试使用.blob()而不是.text()，然后使用FileReader从 Blob对象，但结果相同