toArray()

in js/reveal.js [3991:4036]

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

			toArray( element.querySelectorAll( 'video, audio' ) ).forEach( function( el ) {
				if( closestParent( el, '.fragment' ) && !closestParent( el, '.fragment.visible' ) ) {
					return;
				}

				// Prefer an explicit global autoplay setting
				var autoplay = config.autoPlayMedia;

				// If no global setting is available, fall back on the element's
				// own autoplay setting
				if( typeof autoplay !== 'boolean' ) {
					autoplay = el.hasAttribute( 'data-autoplay' ) || !!closestParent( el, '.slide-background' );
				}

				if( autoplay && typeof el.play === 'function' ) {

					// If the media is ready, start playback
					if( el.readyState > 1 ) {
						startEmbeddedMedia( { target: el } );
					}
					// Mobile devices never fire a loaded event so instead
					// of waiting, we initiate playback
					else if( isMobileDevice ) {
						var promise = el.play();

						// If autoplay does not work, ensure that the controls are visible so
						// that the viewer can start the media on their own
						if( promise && typeof promise.catch === 'function' && el.controls === false ) {
							promise.catch( function() {
								el.controls = true;

								// Once the video does start playing, hide the controls again
								el.addEventListener( 'play', function() {
									el.controls = false;
								} );
							} );
						}
					}
					// If the media isn't loaded, wait before playing
					else {
						el.removeEventListener( 'loadeddata', startEmbeddedMedia ); // remove first to avoid dupes
						el.addEventListener( 'loadeddata', startEmbeddedMedia );
					}

				}
			} );