js 如何删除当前节点的祖父元素的类？

Question

js 如何删除当前节点的祖父元素的类？

Answer 1

//jq
$('dom').parents('.className').removeClass('.className')

//原生
let dom = xxx
if(dom){
    while(dom = dom.parentNode){
        dom.classList && dom.classList.contains('className') && dom.classList.remove('className');
    }
}

Answer 2

类名order
if (Img[i].parentNode.parentNode && Img[i].parentNode.parentNode.classList.contains('order')) {
                Img[i].parentNode.parentNode.classList.remove('order')
            }