lex
/
classroom-instruments


			
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							<!DOCTYPE html>

<html lang="zh-CN">


<head>
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  <title>音乐数字课堂</title>

  <style>
    body {
      background: #f1f5ff;
      width: 100%;
    }

    .bgImg {
      width: 456px;
      height: 522px;
    }

    .btnImg {
      width: 288px;
      position: absolute;
      left: 50%;
      margin-left: -144px;
      bottom: 31px;
      cursor: pointer;
      z-index: 100;

    }

    .imgWrap {
      width: 456px;
      height: 522px;
      margin: 140px auto 0;
      position: relative;
      z-index: 100;
    }

    /* margin-top: 300px; */
    .textWrap {
      margin-top: 140px;
      text-align: center;
      width: 500px;
      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-weight: 600;
      color: #FFFFFF;
      line-height: 30px;
      cursor: pointer;
      margin-top: 32px;
      list-style: none outside none;
      text-decoration: none;
    }
  </style>
  <script type="text/javascript">
    function gotoLinlk() {
      console.log('点击')
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        window.open('https://oss.dayaedu.com/appstore/ChromeStandaloneSetup64.exe');
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        window.open('https://oss.dayaedu.com/appstore/googlechrome-mac.dmg');
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    function getChromeVersion() {
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      if (sAgent.indexOf("firefox") != -1) {
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    function isChrome() {
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      var winNav = window.navigator;
      var vendorName = winNav.vendor;
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      var isIOSChrome = winNav.userAgent.match('CriOS');
      return (
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          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) {
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        } else {
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        }
      } else if (isEdge) {
        return 'edge';//edge
      } else if (isIE11) {
        return 11; //IE11
      } else {
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      }
    }
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          caches.keys().then(function (cacheNames) {
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              caches.delete(cacheName);
            });
          });
          // 尝试监听install
        }

        window.location.reload();
      }
      // let refreshing = false


      // if ('serviceWorker' in navigator) {
      //   // let refreshing = false
      //   let flag = caches.keys().length > 0
      //   console.log(caches.keys(), 'caches.keys()', `是否有缓存${flag}`);
      //   caches.keys().then(function (cacheNames) {
      //     cacheNames.forEach(function (cacheName) {
      //       caches.delete(cacheName);
      //     });
      //     if (flag) {
      //       window.location.reload()
      //     }
      //   });

      //   // 尝试监听install


      // }
      // let refreshing = false
      // navigator.serviceWorker.addEventListener('controllerchange', () => {
      //   console.log('controllerchange')
      //   if (refreshing) {
      //     return
      //   }
      //   refreshing = true;
      //   window.location.reload();
      // })


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


        if (IEVersion() < 9 && IEVersion() != -1) {

          document.writeln(" <div class='textWrap'><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 {
          document.writeln(" <div class='imgWrap'><img onabort='this.src=this.src' src='https://oss.dayaedu.com/gyt/basic/1688699993534.png' class='bgImg' alt=''><img src='https://oss.dayaedu.com/gyt/basic/1688699779209.png'  onabort='this.src=this.src' onclick='gotoLinlk()' class='btnImg' alt=''></div>");
          document.execCommand("Stop");
        }
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        if (getChromeVersion() < 90) {

          document.writeln(" <div class='imgWrap'><img src='https://oss.dayaedu.com/gyt/basic/1688699993534.png' class='bgImg' alt=''><img src='https://oss.dayaedu.com/gyt/basic/1688699779209.png' onclick='gotoLinlk()' class='btnImg' alt=''></div>");
          document.execCommand("Stop");
          window.stop()
          console.log('Stop')
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        // if (IsFF()) {

      }

    })(window);
  </script>
</head>

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<!-- 背景 https://oss.dayaedu.com/gyt/basic/1688699993534.png -->

<body class="myBody">

  <div id="app"></div>
  <script type="module" src="/src/main.ts"></script>

</body>

</html>