Function matrix

Sortable.js:206–222

(el, selfOnly)

    }
  }
  function matrix(el, selfOnly) {
    var appliedTransforms = '';
    if (typeof el === 'string') {
      appliedTransforms = el;
    } else {
      do {
        var transform = css(el, 'transform');
        if (transform && transform !== 'none') {
          appliedTransforms = transform + ' ' + appliedTransforms;
        }
        /* jshint boss:true */
      } while (!selfOnly && (el = el.parentNode));
    }
    var matrixFn = window.DOMMatrix || window.WebKitCSSMatrix || window.CSSMatrix || window.MSCSSMatrix;
    /*jshint -W056 */
    return matrixFn && new matrixFn(appliedTransforms);
  }
  function find(ctx, tagName, iterator) {
    if (ctx) {
      var list = ctx.getElementsByTagName(tagName),