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How to implement network connectivity detection in AMP?

Created on 2025-02-24 15:25:11
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Implementing network connectivity detection in AMP (Accelerated Mobile Pages) involves using JavaScript to check the availability of a network connection. This can be crucial for providing a seamless user experience by adapting content or notifications based on the user's connectivity status.

One common method is to use the navigator.onLine property, which returns a boolean indicating whether the browser is online or offline. Additionally, you can listen for online and offline events using window.addEventListener.

Here's an example of how to implement network connectivity detection in AMP:

<!doctype html>
<html ⚡>
<head>
  <meta charset="utf-8">
  <title>Network Connectivity Detection in AMP</title>
  <script async src="https://cdn.ampproject.org/v0.js"></script>
  <script id="amp-access" type="application/json">
    {
      "authorization": "https://example.com/amp-access.json",
      "pingback": "https://example.com/amp-pingback.json",
      "login": {
        "redirect": "https://example.com/login"
      }
    }
  </script>
  <script>
    function checkConnectivity() {
      if (navigator.onLine) {
        console.log('Network is available');
        // You can update the UI or fetch data here
      } else {
        console.log('Network is unavailable');
        // Handle offline scenario, maybe show a message or use cached data
      }
    }

    window.addEventListener('online', checkConnectivity);
    window.addEventListener('offline', checkConnectivity);

    // Initial check
    checkConnectivity();
  </script>
</head>
<body>
  <h1>Network Connectivity Detection in AMP</h1>
  <p>Check the console for connectivity status.</p>
</body>
</html>

In this example, the checkConnectivity function is called whenever the browser's online status changes. It logs the current connectivity status to the console. You can extend this function to update the UI or fetch data based on the connectivity status.

For more advanced scenarios, especially in a cloud environment, you might consider using services like Tencent Cloud's Cloud Functions to handle connectivity checks and responses dynamically. This can be particularly useful for applications requiring real-time updates or notifications based on network status changes.