Method appendTo

src/utils.ts:649–659

(el: HTMLElement, parent: string | HTMLElement)

  }

  public static appendTo(el: HTMLElement, parent: string | HTMLElement): void {
    let parentNode: HTMLElement;
    if (typeof parent === 'string') {
      parentNode = Utils.getElement(parent);
    } else {
      parentNode = parent;
    }
    if (parentNode) {
      parentNode.appendChild(el);
    }
  }

  // public static setPositionRelative(el: HTMLElement): void {
  //   if (!(/^(?:r|a|f)/).test(getComputedStyle(el).position)) {