iframe不支持ios的解决办法

<div id="iframe-box">
  <iframe id="ifram" src="https://www.baidu.com" width="100%"></iframe>
</div>
<style>

#ifram {
  border: 0;
  width: 1px;
  min-width: 100%;
  *width: 100%;
}

</style>
<script>
　　

let ifram = document.getElementById('ifram');

if (navigator.userAgent.match(/iPad|iPhone/i)) {
  let iframe_box = document.getElementById('iframe-box');
  iframe_box.style.width = 100 + '%';
  iframe_box.style.overflowX = 'hidden';
  iframe_box.style.overflowY = 'scroll';
  iframe_box.style.webkitOverflowScrolling = 'touch';
  ifram.setAttribute('scrolling', 'no');
  iframe_box.appendChild(ifram)
}

　　
</script>