 class="tooltipText">An iframe is an element in a web page than allows websites to embed a second web page. Caching of this web page could be abused for cross-site tracking.</span></div></td><td><div class='dataPoint tooltipParent good'
> &nbsp;
<span class="tooltipText">write: (key) =&gt; new Promise((resolve, reject) =&gt; {
      let iframe = document.createElement(&quot;iframe&quot;);
      document.body.appendChild(iframe);
      iframe.addEventListener(&quot;load&quot;, () =&gt; resolve(key), {once: t