code format tweaks

js/reveal.js

@@ -554,21 +554,36 @@
 
 	}
 
+	/**
+	 * Converts the given HTML element into a string of text
+	 * that can be announced to a screen reader. Hidden
+	 * elements are excluded.
+	 */
 	function getStatusText( node ) {
-		var text = "";
-		if(node.nodeType === 3) { //text node
+
+		var text = '';
+
+		// Text node
+		if( node.nodeType === 3 ) {
 			text += node.textContent;
-		}else if (node.nodeType === 1) { //element node
+		}
+		// Element node
+		else if( node.nodeType === 1 ) {
+
 			var isAriaHidden = node.getAttribute( 'aria-hidden' );
 			var isDisplayHidden = window.getComputedStyle( node )['display'] === 'none';
 			if( isAriaHidden !== 'true' && !isDisplayHidden ) {
-				var children = node.childNodes;
-				for (var i = 0;i < children.length; i++) {
-					text += getStatusText(children[i]);
-				}
+
+				toArray( node.childNodes ).forEach( function( child ) {
+					text += getStatusText( child );
+				} );
+
 			}
+
 		}
+
 		return text;
+
 	}
 
 	/**