Function on

src/events/on.ts:34–167

( this: Cash, eventFullName: Record<string, EventCallback> | string, selector?: any, data?: any, callback?: EventCallback, _one?: boolean )

function on ( this: Cash, eventFullName: string, data: any, callback: EventCallback ): Cash;
function on ( this: Cash, eventFullName: string, selector: string | null | undefined, data: any, callback: EventCallback, _one?: boolean ): Cash;
function on ( this: Cash, eventFullName: Record<string, EventCallback> | string, selector?: any, data?: any, callback?: EventCallback, _one?: boolean ) {

  if ( !isString ( eventFullName ) ) {

    for ( const key in eventFullName ) {

      this.on ( key, selector, data, eventFullName[key], _one );

    }

    return this;

  }

  if ( !isString ( selector ) ) {

    if ( isUndefined ( selector ) || isNull ( selector ) ) {

      selector = '';

    } else if ( isUndefined ( data ) ) {

      data = selector;
      selector = '';

    } else {

      callback = data;
      data = selector;
      selector = '';

    }

  }

  if ( !isFunction ( callback ) ) {

    callback = data;
    data = undefined;

  }

  if ( !callback ) return this;

  each ( getSplitValues ( eventFullName ), ( i, eventFullName ) => {

    const [nameOriginal, namespaces] = parseEventName ( eventFullName );
    const name = getEventNameBubbling ( nameOriginal );
    const isEventHover = ( nameOriginal in eventsHover );
    const isEventFocus = ( nameOriginal in eventsFocus );

    if ( !name ) return;

    this.each ( ( i, ele ) => {

      if ( !isElement ( ele ) && !isDocument ( ele ) && !isWindow ( ele ) ) return;

      const finalCallback = function ( event: Event ) {