parentsuntil v0.0.7

parentsUntil

This is a packaged version of the Chris Ferdinandi utility function that replicates the functionality of the Jquery function of the same name.

Installation

npm i parentsuntil

Usage

import parentsUntil from 'parentsUntil'

var elem = document.querySelector('#some-element');
var parentsUntil = parentsUntil(elem, '.some-class');
var parentsUntilByFilter = parentsUntil(elem, '.some-class', '[data-something]');

Real world example

Add an is-active class to the parent .nav__item when a menu item is clicked

<div class="nav">
  <ul class="nav__submenu">
    <li class="nav__item">
      <a href="#">nav item</a>
      <ul class="nav__submenu">
        <li id="test" class="nav__item">
          <a href="#">sub item</a>
        </li>
      </ul>
    </li>
  </ul>
</div>

document.getElementById('test').addEventListener('onClick', onClick)

onClick(event) {
  const navItem = event.target
  const parents = parentsUntil(navItem, '.nav')
  parents.forEach(DOMNode => {
    if (DOMNode.classList.contains('nav__submenu')) {
      DOMNode.parentNode.classList.add('is-active')
    }
  })
}