const desc = $(".desc");
const desc_hidden = $("desc_hidden");
desc.on("click", function() {
$(this).removeClass(desc_hidden);
}
<div class="desc desc_hidden"></div>
desc.on("click", function() {
$(this).removeClass('desc_hidden');
})
const desc_hidden = "desc_hidden";
desc.on("click", function() {
$(this).removeClass(desc_hidden);
})