Function syncSlide

js/reveal.js:1599–1616

* Updates reveal.js to keep in sync with new slide attributes. For * example, if you add a new `data-background-image` you can call * this to have reveal.js render the new background image. * * Similar to #sync() but more efficient when you only need to * refresh a specific slide. * *

( slide = currentSlide )

	 * @param {HTMLElement} slide
	 */
	function syncSlide( slide = currentSlide ) {

		backgrounds.sync( slide );
		fragments.sync( slide );

		slideContent.load( slide );

		backgrounds.update();
		notes.update();

		dispatchEvent({
			type: 'slidesync',
			data: {
				slide
			}
		});

	}

	/**
	 * Resets all vertical slides so that only the first