Function dir

src/modules/jquery.js:2812–2825

(elem, dir, until)

  })();

  var dir = function (elem, dir, until) {
    var matched = [],
      truncate = until !== undefined;

    while ((elem = elem[dir]) && elem.nodeType !== 9) {
      if (elem.nodeType === 1) {
        if (truncate && jQuery(elem).is(until)) {
          break;
        }
        matched.push(elem);
      }
    }
    return matched;
  };

  var siblings = function (n, elem) {
    var matched = [];