#9 - Real, User Based Countdown v0.1

Dynamically set a per-user countdown time and then hide elements when time is up.

View demo

<!-- 💙 MEMBERSCRIPT #9 v0.1 💙 COUNTDOWN BY USER -->
<script>
// Step 1: Get the current date and time
const currentDate = new Date();

// Step 2: Calculate the new date and time based on the attribute values
const addTime = (date, unit, value) => {
  const newDate = new Date(date);
  switch (unit) {
    case 'hour':
      newDate.setHours(newDate.getHours() + value);
      break;
    case 'minute':
      newDate.setMinutes(newDate.getMinutes() + value);
      break;
    case 'second':
      newDate.setSeconds(newDate.getSeconds() + value);
      break;
    case 'millisecond':
      newDate.setMilliseconds(newDate.getMilliseconds() + value);
      break;
  }
  return newDate;
};

// Retrieve attribute values and calculate the new date and time
const hourAttr = document.querySelector('[ms-code-time-hour]');
const minuteAttr = document.querySelector('[ms-code-time-minute]');
const secondAttr = document.querySelector('[ms-code-time-second]');
const millisecondAttr = document.querySelector('[ms-code-time-millisecond]');

const countdownDateTime = localStorage.getItem('countdownDateTime');
let newDate;

if (countdownDateTime) {
  newDate = new Date(countdownDateTime);
} else {
  newDate = currentDate;
  if (hourAttr.hasAttribute('ms-code-time-hour')) {
    const hours = parseInt(hourAttr.getAttribute('ms-code-time-hour'));
    newDate = addTime(newDate, 'hour', isNaN(hours) ? 0 : hours);
  }
  if (minuteAttr.hasAttribute('ms-code-time-minute')) {
    const minutes = parseInt(minuteAttr.getAttribute('ms-code-time-minute'));
    newDate = addTime(newDate, 'minute', isNaN(minutes) ? 0 : minutes);
  }
  if (secondAttr.hasAttribute('ms-code-time-second')) {
    const seconds = parseInt(secondAttr.getAttribute('ms-code-time-second'));
    newDate = addTime(newDate, 'second', isNaN(seconds) ? 0 : seconds);
  }
  if (millisecondAttr.hasAttribute('ms-code-time-millisecond')) {
    const milliseconds = parseInt(millisecondAttr.getAttribute('ms-code-time-millisecond'));
    newDate = addTime(newDate, 'millisecond', isNaN(milliseconds) ? 0 : milliseconds);
  }

  localStorage.setItem('countdownDateTime', newDate);
}

// Step 4: Update the text of the elements to show the continuous countdown
const countdownElements = [hourAttr, minuteAttr, secondAttr, millisecondAttr];

const updateCountdown = () => {
  const currentTime = new Date();
  const timeDifference = newDate - currentTime;

  if (timeDifference > 0) {
    const timeParts = [
      Math.floor(timeDifference / (1000 * 60 * 60)) % 24, // Hours
      Math.floor(timeDifference / (1000 * 60)) % 60, // Minutes
      Math.floor(timeDifference / 1000) % 60, // Seconds
      Math.floor(timeDifference) % 1000, // Milliseconds
    ];

    // Update the text of the elements with the countdown values
    countdownElements.forEach((element, index) => {
      const timeValue = timeParts[index];
      if (index === 3) {
        element.innerText = timeValue.toString().padStart(2, '0').slice(0, 2); // Display only two digits for milliseconds
      } else {
        element.innerText = timeValue < 10 ? `0${timeValue}` : timeValue;
      }
    });

    // Update the countdown every 10 milliseconds
    setTimeout(updateCountdown, 10);
  } else {
    // Countdown has reached zero or has passed
    countdownElements.forEach((element) => {
      element.innerText = '00';
    });

    // Remove elements with ms-code-countdown="hide-on-end" attribute
    const hideOnEndElements = document.querySelectorAll('[ms-code-countdown="hide-on-end"]');
    hideOnEndElements.forEach((element) => {
      element.remove();
    });

    // Optionally, you can perform additional actions or display a message when the countdown ends
  }
};

// Start the countdown
updateCountdown();
</script>

Creating the Make.com Scenario

1. Download the JSON blueprint below to get stated.

2. Navigate to Make.com and Create a New Scenario...

3. Click the small box with 3 dots and then Import Blueprint...

4. Upload your file and voila! You're ready to link your own accounts.

Need help with this MemberScript?

All Memberstack customers can ask for assistance in the 2.0 Slack. Please note that these are not official features and support cannot be guaranteed.

Join the 2.0 Slack
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