diff --git a/js-features/countdown/task.js b/js-features/countdown/task.js
index e69de29bb2..a1acaafe71 100644
--- a/js-features/countdown/task.js
+++ b/js-features/countdown/task.js
@@ -0,0 +1,16 @@
+const startingSeconds = parseInt(document.getElementById("timer").innerText);
+
+function updateTimer() {
+  let currentSeconds = parseInt(document.getElementById("timer").innerText);
+
+  if (currentSeconds > 0) {
+    currentSeconds--;
+    document.getElementById("timer").innerText = currentSeconds;
+
+    setTimeout(updateTimer, 1000);
+  } else {
+    alert("Вы победили в конкурсе!");
+  }
+}
+
+updateTimer();