openSensor/index.html at master · Neezurft/openSensor · GitHub

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<!DOCTYPE html>
<html>
  <body>
    <p>
      <span>LED Status: </span>
      <span id="pinStatus"></span>
    </p>
    <button id="pollButton" onclick="togglePoll()">Poll LED status</button>
    <button onclick="toggleLED()">Toggle LED Status</button>
    <script>
      let interval = null;

      function pollLEDStatus() {
        fetch("/pinStatus")
          .then((res) => res.json())
          .then(({ status }) => {
            document.getElementById(
              "pinStatus"
            ).innerHTML = `LED is currently ${status ? "ON" : "OFF"}`;
          });
      }

      function startPolling() {
        interval = setInterval(pollLEDStatus, 500);
      }

      function toggleLED() {
        fetch("/toggleLED", { method: "POST" });
      }

      function togglePoll() {
        if (interval !== null) {
          clearInterval(interval);
          interval = null;
          document.getElementById("pollButton").innerHTML = "Poll LED status";
        } else {
          document.getElementById("pollButton").innerHTML =
            "Stop Polling LED status";
          startPolling();
        }
      }

      pollLEDStatus();
    </script>
  </body>
</html>