1.使用cors-anywhere跨域问题

<iframe id="iFrame" style="width: 100%; height: 100%" frameborder="0" />

getUrl(url) {
  const http = window.location.protocol === 'http:' ? 'http:' : 'https:'
  // 调用跨域API
  let realurl = http + '//cors-anywhere.herokuapp.com/'
  axios.get(realurl).then(
​    (response) => {
    let html = response.data
    html = html
    .replace(/data-src/g, 'src')
    .replace(/<script\b[^<]*(?:(?!<\/script>)<[^<]*)*<\/script>/g, '')
    .replace(/https/g, 'http')
    // let html_src = 'data:text/html;charset=utf-8,' + html;
    const html_src = html
    const iframe = document.getElementById('iFrame')
    iframe.src = html_src
    var doc = iframe.contentDocument || iframe.document
    doc.write(html_src)
    doc.getElementById('js_content').style.visibility = 'visible'
  },
  (err) => {
    console.log(err)
  }
)

2. 微信文章图片因防盗链不显示
   在html的head标签中添加

<meta name="referrer" content="never">

添加后如果没效果清除浏览器缓存。第一次加载后资源有缓存，导致浏览器直接读取本地资源，图片还是不能显示，清除缓存刷新就好了。