Function lastChild

Sortable.js:377–383

* Gets the last child in the el, ignoring ghostEl or invisible elements (clones) * @param {HTMLElement} el Parent element * @param {selector} selector Any other elements that should be ignored * @return {HTMLElement} The last child, ignoring ghostEl

(el, selector)

   * @return {HTMLElement}          The last child, ignoring ghostEl
   */
  function lastChild(el, selector) {
    var last = el.lastElementChild;
    while (last && (last === Sortable.ghost || css(last, 'display') === 'none' || selector && !matches(last, selector))) {
      last = last.previousElementSibling;
    }
    return last || null;
  }

  /**
   * Returns the index of an element within its parent for a selected set of