[JavaScript] 9식 - setInterval (clock)

* setInterval

const clockContainer = document.querySelector(".js-clock"),
    clockTitle = clockContainer.querySelector("h1");

function getTime() {
    const date = new Date();
    const minutes = date.getMinutes();
    const hours = date.getHours();
    const seconds = date.getSeconds();
    clockTitle.innerText = `${hours < 10 ? `0${hours}` : hours}:
                            ${minutes < 10 ? `0${minutes} ` : minutes}:
                            ${seconds < 10 ? `0${seconds}` : seconds}`; // 삼항연산자
}

function init() {
    getTime();
    setInterval(getTime, 1000);
}

init();