lex
/
classroom-instruments


			
							123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171
							<!DOCTYPE html>

<html lang="zh-CN">


<head>
  <meta charset="UTF-8" />
  <link rel="icon" href="./favicon.ico" />
  <meta name="viewport"
    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 -->
  <meta name="apple-mobile-web-app-status-bar-style" content="black" />
  <!-- 忽略页面中的数字识别为电话，忽略email识别 -->
  <meta name="format-detection" content="telphone=no, email=no" />
  <!-- 启用360浏览器的极速模式(webkit) -->
  <meta name="renderer" content="webkit" />
  <!-- 避免IE使用兼容模式 -->
  <meta http-equiv="X-UA-Compatible" content="IE=edge" />
  <meta name="HandheldFriendly" content="true" />
  <!-- 设置在apple上以应用模式启动时，是否全屏 -->
  <meta name="apple-touch-fullscreen" content="yes" />
  <!-- windows phone 点击无高光 -->
  <meta name="msapplication-tap-highlight" content="no" />
  <meta name="referrer" content="no-referrer" />
  <title>老师端</title>
  <script type="module" crossorigin src="./assets/index-2d47a39b.js"></script>
  <link rel="stylesheet" href="./assets/index-636b0edf.css">
  <script type="module">import.meta.url;import("_").catch(()=>1);async function* g(){};if(location.protocol!="file:"){window.__vite_is_modern_browser=true}</script>
  <script type="module">!function(){if(window.__vite_is_modern_browser)return;console.warn("vite: loading legacy chunks, syntax error above and the same error below should be ignored");var e=document.getElementById("vite-legacy-polyfill"),n=document.createElement("script");n.src=e.src,n.onload=function(){System.import(document.getElementById('vite-legacy-entry').getAttribute('data-src'))},document.body.appendChild(n)}();</script>
</head>
<style>
  body {
    background: #f1f5ff;
    width: 100%;
  }

  .bgImg {
    width: 23.75vw;
  }

  .btnImg {
    width: 15vw;
    position: absolute;
    left: 50%;
    margin-left: -7.5vw;
    bottom: 1.61458vw;
    cursor: pointer;
  }

  .imgWrap {
    width: 23.75vw;
    position: absolute;
    top: 7.34375vw;
    left: 50%;
    margin-left: -15vw;
  }
</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 getChromeVersion() {
      var arr = navigator.userAgent.split(' ');
      var chromeVersion = '';
      for (let i = 0; i < arr.length; i++) {
        if (/chrome/i.test(arr[i])) chromeVersion = arr[i];
      }
      if (chromeVersion) {
        return Number(chromeVersion.split('/')[1].split('.')[0]);
      } else {
        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) {
          return 7;
        } 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()) {
        console.log(1)
        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>");
        document.execCommand("Stop");
        // if (IsFF()) {
        //   window.stop()
        // } else {
        //   document.execCommand("Stop");
        // }

      } else {
        if (getChromeVersion() < 90) {
          console.log(2)
          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>");
          document.execCommand("Stop");
        }

        // if (IsFF()) {
      }

    })(window);
  </script>
  <div id="app"></div>
  

  <script nomodule>!function(){var e=document,t=e.createElement("script");if(!("noModule"in t)&&"onbeforeload"in t){var n=!1;e.addEventListener("beforeload",(function(e){if(e.target===t)n=!0;else if(!e.target.hasAttribute("nomodule")||!n)return;e.preventDefault()}),!0),t.type="module",t.src=".",e.head.appendChild(t),t.remove()}}();</script>
  <script nomodule crossorigin id="vite-legacy-polyfill" src="./assets/polyfills-legacy-fb1ae481.js"></script>
  <script nomodule crossorigin id="vite-legacy-entry" data-src="./assets/index-legacy-76ed30e6.js">System.import(document.getElementById('vite-legacy-entry').getAttribute('data-src'))</script>
</body>

</html>