当浏览器开始离线工作时,在HTML中执行脚本?

当网络浏览器开始离线工作时,onoffline 属性就会触发。您可以尝试运行以下代码来实现onoffline 属性 –

示例

<!DOCTYPE html>
<html>
   <body ononline = onlineFunc() onoffline = offlineFunc()>
      <script>
         function onlineFunc() {
            alert (Working online!);
         }
         function offlineFunc() {
            alert (Workinf offline!);
         }
      </script>
      <p>Got o the web browser menu bar and click the File menu. Select Work Offline and toggle between online and offline.</p>
   </body>
</html>

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