update timer function

index.html

@@ -86,35 +86,71 @@
     </footer>
 </body>
 <script>
-    // Set the date we're counting up from
+    function getTimeSince(dateString) {
-    const countUpDate = new Date("Nov 1, 2021 16:00:00").getTime();
+        // Parse the input date string into a Date object
-    const timerElement = document.getElementById("timer")
+        const startDate = new Date(dateString);
 
-    function updateHtml() {
+        // Get the current date
-        // Get today's date and time
+        const currentDate = new Date();
-        var now = new Date().getTime();
 
-        // Find the distance between now and the count up date
+        // Calculate the differences in each unit
-        var distance = now - countUpDate;
+        let years = currentDate.getFullYear() - startDate.getFullYear();
+        let months = currentDate.getMonth() - startDate.getMonth();
+        let days = currentDate.getDate() - startDate.getDate();
+        let hours = currentDate.getHours() - startDate.getHours();
+        let minutes = currentDate.getMinutes() - startDate.getMinutes();
+        let seconds = currentDate.getSeconds() - startDate.getSeconds();
 
-        // Time calculations for days, hours, minutes and seconds
+        // Adjust for negative month difference
-        var years = Math.floor(distance / (1000 * 60 * 60 * 24 * 365));
+        if (months < 0) {
-        var days = Math.floor(distance % (1000 * 60 * 60 * 24 * 365) / (1000 * 60 * 60 * 24));
+            years--;
-        var hours = Math.floor((distance % (1000 * 60 * 60 * 24)) / (1000 * 60 * 60));
+            months += 12;
-        var minutes = Math.floor((distance % (1000 * 60 * 60)) / (1000 * 60));
-        var seconds = Math.floor((distance % (1000 * 60)) / 1000);
-
-        // Display the result in the element with id="timer"
-        timerElement.innerHTML = years + "y " + days + "d " + hours + "h "
-            + minutes + "m " + seconds + "s";
         }
 
+        // Adjust for negative day difference
+        if (days < 0) {
+            months--;
+            let prevMonth = new Date(currentDate.getFullYear(), currentDate.getMonth(), 0).getDate();
+            days += prevMonth;
+        }
 
+        // Adjust for negative hour difference
+        if (hours < 0) {
+            days--;
+            hours += 24;
+        }
+
+        // Adjust for negative minute difference
+        if (minutes < 0) {
+            hours--;
+            minutes += 60;
+        }
+
+        // Adjust for negative second difference
+        if (seconds < 0) {
+            minutes--;
+            seconds += 60;
+        }
+
+        return {
+            years: years,
+            months: months,
+            days: days,
+            hours: hours,
+            minutes: minutes,
+            seconds: seconds
+        };
+    }
+
+    function updateHtml() {
+        var result = getTimeSince("Nov 1, 2021 16:43:22")
+        const timerElement = document.getElementById("timer")
+        timerElement.innerHTML = `${result.years} Years, ${result.months} Months, ${result.days} Days,<br/> ${result.hours} Hours, ${result.minutes} Minutes, ${result.seconds} Seconds`
+    }
 
     updateHtml()
 
-    // Update the count down every 1 second
+    var x = setInterval(updateHtml, 999);
-    var x = setInterval(updateHtml, 1000);
 </script>
 
 </html>