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更改iframe 中的内容

  1. 加载目标网址,比如 https://www.jd.com/AA3508130.html
  2. 把目标网站 通过接口,传送后台
  3. 后端解析html 树,并且给最末尾元素添加一个自定义标签,
  4. 自定义标签上添加onmouseout, onmouseover事件,并且监听这个自定义标签的点击事件
  5. 最后,将整个html dom 树,作为html 输出
  6. 赋值到 iframe 的 srcdoc 属性上进行展示

使用的技术

  1. http抓取网站,作为字符串
  2. cheerio用来分析html 结构,并且加一些更改
  3. 输出html

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