提交表单时停止执行计时器功能

stop the timer function from executing when form is submitted

我有一个在线测验程序,用户需要在一段时间内完成它。当用户用完时间时,我会显示一条警报,说明您的时间已到,他将被重定向到结果页面。当用户在时间到期之前完成测验并且位于结果页面内时,我会收到相同的警报。我修改了如下代码,但它不起作用。我在名为 questions.php 的 ajax 请求页面中调用函数 initTimer(1,1)。

index.php

function initTimer(periodInSeconds, status) {
  if (status == 0) {
    return false;
  }
  var end = Date.now() + periodInSeconds * 1000 * 60;
  var x = window.setInterval(function() {
    var timeLeft = Math.floor((end - Date.now()) / 1000);

    if (timeLeft < 0) {
      clearInterval(x);
      alert("Time's Up!");
      timeExpired = true;
      var completed = 1;
      $.ajax({
        type: "POST",
        url: "success.php",
        data: {
          'userID': <?php echo $_SESSION['userID'];?>
        },
        success: function(hasil) {
          $('.response_div').html(hasil);
        }
      });
    }

    $(document).find('#timerspan').html('00:' + (timeLeft < 10 ? '0' + timeLeft : timeLeft));
  }, 200);
}
//when user submits the form before time expires

$(document).on('submit', '.form_choice', function() {
  initTimer(1, 0)
  $.ajax({
    type: "POST",
    url: "result.php",
    data: data,
    success: function(hasil) {
      $('.response_div').html(hasil);
    }
  })
});

我不想在用户提交表单之前执行 init function() expires.Please 帮助我

initTimer函数外声明保存定时器的变量,然后可以通过status = 0

调用它来清除定时器
var timer;

function initTimer(periodInSeconds, status) {
  if (status == 0) {
    clearInterval(timer);
    return;
  }
  var end = Date.now() + periodInSeconds * 1000 * 60;
  timer = window.setInterval(function() {
    var timeLeft = Math.floor((end - Date.now()) / 1000);

    if (timeLeft < 0) {
      clearInterval(timer);
      alert("Time's Up!");
      timeExpired = true;
      var completed = 1;
      $.ajax({
        type: "POST",
        url: "success.php",
        data: {
          'userID': <?php echo $_SESSION['userID'];?>
        },
        success: function(hasil) {
          $('.response_div').html(hasil);
        }
      });
    }

    $(document).find('#timerspan').html('00:' + (timeLeft < 10 ? '0' + timeLeft : timeLeft));
  }, 200);
}
//when user submits the form before time expires

$(document).on('submit', '.form_choice', function() {
  initTimer(1, 0)
  $.ajax({
    type: "POST",
    url: "result.php",
    data: data,
    success: function(hasil) {
      $('.response_div').html(hasil);
    }
  })
});