Function initNavigation

src/js/components/Slides/Slide.ts:146–156

* Initializes slides as navigation.

()

   * Initializes slides as navigation.
   */
  function initNavigation(): void {
    const controls = Splide.splides.map( target => {
      const Slide = target.splide.Components.Slides.getAt( index );
      return Slide ? Slide.slide.id : '';
    } ).join( ' ' );

    setAttribute( slide, ARIA_LABEL, format( i18n.slideX, ( isClone ? slideIndex : index ) + 1 ) );
    setAttribute( slide, ARIA_CONTROLS, controls );
    setAttribute( slide, ROLE, slideFocus ? 'button' : '' );
    slideFocus && removeAttribute( slide, ARIA_ROLEDESCRIPTION );
  }

  /**
   * If the `updateOnMove` option is `true`, called when the slider starts moving.