var cars = ["camry", "corolla", "toyota", "honda", "ford", "bmw", "audi", "mercedes", "volkswagen", "tesla", "lamborghini"]; var x = 30; var gen = setInterval(function generate() { var text = document.getElementById("child-box"); var random = Math.floor(Math.random() * cars.length); text.innerHTML = cars[random]; var time = document.getElementById("timing").innerText = --x; if (x == 0) { clearInterval(gen); } }, 1000); function gen() { generate(); document.getElementById("clicked").addEventListener('click', generate); }