Check if class exists somewhere in parent - vanilla JS

Question

I\'m really struggling to see how to do this. I want to check if a class exsits somewhere in one of the parent elements of an element.

I don\'t want to use any libra

Answer 1

My example for Vanilla JS, it's use a vanilla equivalent of parents() from jQuery

var htmlElement = ,
    parents = [],
    classExist;
while (htmlElement = htmlElement.parentNode.closest()) {
    parents.push(htmlElement);
}
classExist = (parents > 0);

So your selector just to be a .className

And just check if parent is > 0