Reflex game! The button glows red at random timings between seconds to 14 seconds after pressing the start button! Press the button quickly when it glows! Measure the time from when the button glows to when you press it! The start button says start in a circle and is in the middle of the screen!'s game

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No:5970

3734

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Reflex game! The button glows red at random timing..ALL
Developer User3720｜Date and time 23/7/1 12:13:18
Build time 9.98 sec｜Game capacity 1.166KB｜

Script

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Click here for free DL of the app version that can save data.

<!DOCTYPE html>
<html>
<head>
<style>
.button {
  padding: 10px 20px;
  font-size: 20px;
  border-radius: 50%;
  background-color: grey;
  color: white;
}
</style>
</head>
<body>

function startGame() {
  document.getElementById("start-button").style.display = "none";
  document.getElementById("game-button").style.display = "block";
  
  var randomTime = Math.floor(Math.random() * 13000) + 1000;
  
  setTimeout(function() {
    document.getElementById("game-button").style.backgroundColor = "red";
    startTime = Date.now();
  }, randomTime);
}

function checkTime() {
  endTime = Date.now();
  var reactionTime = endTime - startTime;
  alert("反応時間: " + reactionTime + "ミリ秒");
  
  document.getElementById("start-button").style.display = "block";
  document.getElementById("game-button").style.display = "none";
}
</script>

</body>
</html>