Gitako/packages/pjax/lib/util/contains.js

module.exports = function contains(doc, selectors, el) {
  for (var i = 0; i < selectors.length; i++) {
    var selectedEls = doc.querySelectorAll(selectors[i])
    for (var j = 0; j < selectedEls.length; j++) {
      if (selectedEls[j].contains(el)) {
        return true
      }
    }
  }

  return false
}