make sure isVerticalSlide doesn't throw npe

11 years ago · a0501a30b2
2 changed files with 3 additions and 3 deletions
--- a/js/reveal.js
+++ b/js/reveal.js
@ -1317,7 +1317,7 @@ var Reveal = (function(){
 		// Prefer slide argument, otherwise use current slide
 		slide = slide ? slide : currentSlide;

-		return slide && !!slide.parentNode.nodeName.match( /section/i );
+		return slide && slide.parentNode && !!slide.parentNode.nodeName.match( /section/i );

 	}

--- a/js/reveal.min.js
+++ b/js/reveal.min.js