show()

in src/site/assets/js/bootstrap.esm.js [4593:4636]

• 36 lines of code
• 12 McCabe index (conditional complexity)

  show() {
    if (this._element.parentNode && this._element.parentNode.nodeType === Node.ELEMENT_NODE && this._element.classList.contains(CLASS_NAME_ACTIVE)) {
      return;
    }

    let previous;
    const target = getElementFromSelector(this._element);

    const listElement = this._element.closest(SELECTOR_NAV_LIST_GROUP);

    if (listElement) {
      const itemSelector = listElement.nodeName === 'UL' || listElement.nodeName === 'OL' ? SELECTOR_ACTIVE_UL : SELECTOR_ACTIVE;
      previous = SelectorEngine.find(itemSelector, listElement);
      previous = previous[previous.length - 1];
    }

    const hideEvent = previous ? EventHandler.trigger(previous, EVENT_HIDE$1, {
      relatedTarget: this._element
    }) : null;
    const showEvent = EventHandler.trigger(this._element, EVENT_SHOW$1, {
      relatedTarget: previous
    });

    if (showEvent.defaultPrevented || hideEvent !== null && hideEvent.defaultPrevented) {
      return;
    }

    this._activate(this._element, listElement);

    const complete = () => {
      EventHandler.trigger(previous, EVENT_HIDDEN$1, {
        relatedTarget: this._element
      });
      EventHandler.trigger(this._element, EVENT_SHOWN$1, {
        relatedTarget: previous
      });
    };

    if (target) {
      this._activate(target, target.parentNode, complete);
    } else {
      complete();
    }
  } // Private