Write a setInterval() function that increases the count by 1 and displays the new count in counterElement every 100 milliseconds. Call clearInterval() to cancel the interval when the count displays 5.

Some parts of your question is missing here is the missing part

var count = 0;

var counterElement = document.getElementById("counter");

counterElement.innerHTML = count;

Answer : var interval = setInterval(function () {

   count++;

   counterElement.innerHTML = count;

   if (count === 5) {

       clearTimeout(interval);

   }

}, 300);

Explanation:

var interval = setInterval(function () {

   count++;

   counterElement.innerHTML = count;

   if (count === 5) {

       clearTimeout(interval);

   }

}, 300);

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