const articleOdd = document.querySelectorAll('article.cont:nth-child(odd)'); const articleEven = document.querySelectorAll('article.cont:nth-child(even)'); for(let i = 0; i < articleOdd.length; i++){ articleOdd[i].setAttribute("data-aos","fade-left"); } for(let i = 0; i < articleEven.length; i++){ articleEven[i].setAttribute("data-aos","fade-right"); } // 동일 const article = document.querySelecto..