iframe设置高度为100%

<!DOCTYPE html>

<html lang="en">

<head>

  <meta charset="UTF-8">

  <title>Document</title>

  <meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">

  <style>

  * {

    padding: 0;

    margin: 0;

  }

  html,

  body {

    width: 100%;

    height: 100%;

    overflow: hidden;

  }

  </style>

</head>

<body>

  <iframe id="ajk" width="100%" height="100%" src="http://dulijingjiren18.anjuke.com/gongsi-jjr-3435066/com161133/#afilters" frameborder="0"></iframe>

  <script>

  var ajk = document.querySelector('#ajk');

  var screenHeight, scrillWidth;

  window.onresize = function() {

    screenHeight = document.body.clientHeight;

    scrillWidth = document.body.clientWidth;

    ajk.height = screenHeight;

    if (scrillWidth <= 768) {

      ajk.src = "https://m.anjuke.com/hz/jjr-3435066/com161133/"

    } else {

      ajk.src = "http://dulijingjiren18.anjuke.com/gongsi-jjr-3435066/com161133/#afilters"

    }

  }

  </script>

</body>

</html>
当屏幕为手机屏幕时切换url,pc端时让网页100%显示