HTMl code
<div id="test" class="div-class">1번</div>
<div id="test" class="div-class">2번</div>
<div id="test" class="div-class">3번</div>
javascript code
const divClass = document.querySelectorAll('.div-class');
[].forEach.call(divClass, function(div) {
div.addEventListener('click', click,false)
});
function click(e) {
for(let i=0; i<divClass.length; i++) {
divClass[i].classList.remove('active');
}
this.classList.add('active');
}