iframe 用法

code
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<iframe id="iframe" src="{{ book_url }}" frameborder="0"scrolling="yes" style="border: 0px;"></iframe>
<script>
    // 兼容性代码
  function autoHeight(iframe) {
    if (iframe) {
      var iframeWin = iframe.contentWindow || iframe.contentDocument.parentWindow;
      if (iframeWin.document.body) {
        iframe.height = iframeWin.document.documentElement.scrollHeight || iframeWin.document.body.scrollHeight;
        iframe.width = iframeWin.document.documentElement.scrollWidth || iframeWin.document.body.scrollWidth;
      }
    }
  }
  window.onload = function() {
    autoHeight(document.getElementById('iframe'));
  }
</script>
</body>
</html>