off()

in applications/clouddemo/net4/CloudDemo.Mvc/Scripts/bootstrap.esm.js [492:527]

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

  off(element, originalTypeEvent, handler, delegationFunction) {
    if (typeof originalTypeEvent !== 'string' || !element) {
      return;
    }

    const [isDelegated, callable, typeEvent] = normalizeParameters(originalTypeEvent, handler, delegationFunction);
    const inNamespace = typeEvent !== originalTypeEvent;
    const events = getElementEvents(element);
    const storeElementEvent = events[typeEvent] || {};
    const isNamespace = originalTypeEvent.startsWith('.');

    if (typeof callable !== 'undefined') {
      // Simplest case: handler is passed, remove that listener ONLY.
      if (!Object.keys(storeElementEvent).length) {
        return;
      }

      removeHandler(element, events, typeEvent, callable, isDelegated ? handler : null);
      return;
    }

    if (isNamespace) {
      for (const elementEvent of Object.keys(events)) {
        removeNamespacedHandlers(element, events, elementEvent, originalTypeEvent.slice(1));
      }
    }

    for (const keyHandlers of Object.keys(storeElementEvent)) {
      const handlerKey = keyHandlers.replace(stripUidRegex, '');

      if (!inNamespace || originalTypeEvent.includes(handlerKey)) {
        const event = storeElementEvent[keyHandlers];
        removeHandler(element, events, typeEvent, event.callable, event.delegationSelector);
      }
    }
  },