lex
/
classroom-instruments


			
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							<!DOCTYPE html>

<html lang="zh-CN">


<head>
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    content="width=device-width, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0, viewport-fit=cover">
  <meta http-equiv="Cache-control" content="no-cache">
  <meta http-equiv="Cache" content="no-cache">
  <meta name="apple-mobile-web-app-capable" content="yes" />
  <!-- 设置苹果工具栏颜色 -->
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  <meta name="format-detection" content="telphone=no, email=no" />
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  <meta name="msapplication-tap-highlight" content="no" />
  <meta name="referrer" content="no-referrer" />
  <title>老师端</title>
</head>
<style>
  body {
    background: #f1f5ff;
    width: 100%;
  }

  .bgImg {
    width: 456px;
  }

  .btnImg {
    width: 288px;
    position: absolute;
    left: 50%;
    margin-left: -144px;
    bottom: 31px;
    cursor: pointer;
  }

  /* .imgWrap {
    width: 456px;
    position: absolute;
    top: 141px;
    left: 50%;
    margin-left: -288px;
  } */

  .imgWrap {
    margin-top: 300px;
    text-align: center;
    /* width: 456px;
        position: absolute;
        top: 141px;
        left: 50%;
        margin-left: -288px;*/
  }

  .subMsg {
    margin-top: 32px;
    font-size: 22px;
    line-height: 30px;
    color: #777;
  }

  .subBtn {
    width: 231px;
    height: 62px;
    background: #198CFE;
    border-radius: 18px;
    border: none;
    font-size: 22px;
    font-family: PingFangSC-Semibold, PingFang SC;
    font-weight: 600;
    color: #FFFFFF;
    line-height: 30px;
    cursor: pointer;
    margin-top: 32px;
    list-style: none outside none;
    text-decoration: none;
  }
</style>
<!-- 按钮 https://gyt.ks3-cn-beijing.ksyuncs.com/basic/1688699779209.png -->
<!-- 背景 https://gyt.ks3-cn-beijing.ksyuncs.com/basic/1688699993534.png -->

<body class="myBody">
  <script type="text/javascript">
    function gotoLinlk() {
      console.log('点击')
      var agent = navigator.userAgent.toLowerCase();
      var isMac = function () { return /macintosh|mac os x/i.test(navigator.userAgent); }();
      if (agent.indexOf("win32") >= 0 || agent.indexOf("wow32") >= 0) {
        window.open('https://appstore.ks3-cn-beijing.ksyuncs.com/ChromeStandaloneSetup32.exe')
      }
      if (agent.indexOf("win64") >= 0 || agent.indexOf("wow64") >= 0) {
        window.open('https://appstore.ks3-cn-beijing.ksyuncs.com/ChromeStandaloneSetup64.exe')
      }
      if (isMac) {
        window.open('https://appstore.ks3-cn-beijing.ksyuncs.com/googlechrome-mac.dmg')
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    function getChromeVersion() {
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      var chromeVersion = '';
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        if (/chrome/i.test(arr[i])) chromeVersion = arr[i];
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      if (chromeVersion) {
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        return false;
      }
    };
    function IsFF() {
      var sAgent = window.navigator.userAgent.toLowerCase();

      if (sAgent.indexOf("firefox") != -1) {
        return true;
      }
      return false;
    }

    function isChrome() {
      var isChromium = window.chrome;
      var winNav = window.navigator;
      var vendorName = winNav.vendor;
      var isOpera = typeof window.opr !== 'undefined';
      var isIEedge = winNav.userAgent.indexOf('Edge') > -1;
      var isIOSChrome = winNav.userAgent.match('CriOS');
      return (
        isIOSChrome ||
        (isChromium !== null &&
          typeof isChromium !== 'undefined' &&
          vendorName === 'Google Inc.' &&
          isOpera === false &&
          isIEedge === false)
      );
    };
    function IEVersion() {
      var userAgent = navigator.userAgent; //取得浏览器的userAgent字符串
      var isIE = userAgent.indexOf("compatible") > -1 && userAgent.indexOf("MSIE") > -1; //判断是否IE<11浏览器
      var isEdge = userAgent.indexOf("Edge") > -1 && !isIE; //判断是否IE的Edge浏览器
      var isIE11 = userAgent.indexOf('Trident') > -1 && userAgent.indexOf("rv:11.0") > -1;
      if (isIE) {
        var reIE = new RegExp("MSIE (\\d+\\.\\d+);");
        reIE.test(userAgent);
        var fIEVersion = parseFloat(RegExp["$1"]);
        if (fIEVersion == 7) {
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        } else if (fIEVersion == 8) {
          return 8;
        } else if (fIEVersion == 9) {
          return 9;
        } else if (fIEVersion == 10) {
          return 10;
        } else {
          return 6;//IE版本<=7
        }
      } else if (isEdge) {
        return 'edge';//edge
      } else if (isIE11) {
        return 11; //IE11
      } else {
        return -1;//不是ie浏览器
      }
    }
    (function (window) {

      // if (IEVersion() != -1) {

      //   document.writeln("<pre style='text-align:center;color:#fff;background-color:#0cc; height:100%;border:0;position:fixed;top:0;left:0;width:100%;z-index:1234'>" +
      //     "<h2 style='padding-top:200px;margin:0'><strong>" + str + "<br/></strong></h2><h2>" +
      //     str2 + "</h2>");
      //   document.execCommand("Stop");
      // };

      if (!isChrome()) {
        // document.writeln("<div class='imgWrap'><img src='https://gyt.ks3-cn-beijing.ksyuncs.com/basic/1688699993534.png' class='bgImg' alt=''><img src='https://gyt.ks3-cn-beijing.ksyuncs.com/basic/1688699779209.png' class='btnImg' alt=''></div>");


        if (IEVersion() < 9) {
          document.writeln(" <div class='imgWrap'><img src='https://gyt.ks3-cn-beijing.ksyuncs.com/basic/1688699993534.png' class='bgImg' alt=''><img src='https://gyt.ks3-cn-beijing.ksyuncs.com/basic/1688699779209.png' class='btnImg' alt=''></div>");
          alert('1111')
        } else {
          document.writeln(" <div class='imgWrap'><h1>当前浏览器版本过低</h1><p class='subMsg'>为了保证良好的上课体验，推荐您使用谷歌浏览器</p> <button class='subBtn' onclick='gotoLinlk()'>下载谷歌浏览器</button>");
          document.execCommand("Stop");
        }
      } else {
        console.log(getChromeVersion(), 'getChromeVersion')
        if (getChromeVersion() < 90) {

          document.writeln(" <div class='imgWrap'><h1>当前浏览器版本过低</h1><p class='subMsg'>为了保证良好的上课体验，推荐您使用谷歌浏览器</p> <button class='subBtn' onclick='gotoLinlk()'>下载谷歌浏览器</button>");
          document.execCommand("Stop");
          window.stop()
          console.log('Stop')
        }

        // if (IsFF()) {
      }

    })(window);
  </script>
  <div id="app"></div>
  <script type="module" src="/src/main.ts"></script>

</body>

</html>