How to find all Siblings of the currently selected DOM object

Question

What is the perfect way to find all nextSiblings and previousSiblings in JavaScript. I tried few ways but not getting accurate solution. If any element is selected, I need t

Answer 1

All previous siblings

// jQuery (optional filter selector)
$el.prevAll($filter);

// Native (optional filter function)
function getPreviousSiblings(elem, filter) {
  var sibs = [];
  while (elem = elem.previousSibling) {
      if (elem.nodeType === 3) continue; // ignore text nodes
      if (!filter || filter(elem)) sibs.push(elem);
  }
  return sibs;
}

All next siblings

// jQuery (optional selector filter)
$el.nextAll($filter);

// Native (optional filter function)
function getNextSiblings(elem, filter) {
        var sibs = [];
        var nextElem = elem.parentNode.firstChild;
        do {
            if (nextElem.nodeType === 3) continue; // ignore text nodes
            if (nextElem === elem) continue; // ignore elem of target
            if (nextElem === elem.nextElementSibling) {
                if (!filter || filter(elem)) {
                    sibs.push(nextElem);
                    elem = nextElem;
                }
            }
        } while(nextElem = nextElem.nextSibling)
        return sibs;
    }

An example of filter function:

function exampleFilter(elem) {
  switch (elem.nodeName.toUpperCase()) {
    case 'DIV':
      return true;
    case 'SPAN':
      return true;
    default:
      return false;
  }
}