data-background-content-opacity -> data-background-opacity

README.md

@@ -630,7 +630,7 @@ By default, background images are resized to cover the full page. Available opti
 | data-background-size             | cover      | See [background-size](https://developer.mozilla.org/docs/Web/CSS/background-size) on MDN.  |
 | data-background-position         | center     | See [background-position](https://developer.mozilla.org/docs/Web/CSS/background-position) on MDN. |
 | data-background-repeat           | no-repeat  | See [background-repeat](https://developer.mozilla.org/docs/Web/CSS/background-repeat) on MDN. |
-| data-background-content-opacity  | 1          | Opacity of the background image on a 0-1 scale. 0 is transparent and 1 is fully opaque. |
+| data-background-opacity          | 1          | Opacity of the background image on a 0-1 scale. 0 is transparent and 1 is fully opaque. |
 ```html
 <section data-background-image="http://example.com/image.png">
 	<h2>Image</h2>
@@ -649,7 +649,7 @@ Automatically plays a full size video behind the slide.
 | data-background-video-loop       | false   | Flags if the video should play repeatedly. |
 | data-background-video-muted      | false   | Flags if the audio should be muted. |
 | data-background-size             | cover   | Use `cover` for full screen and some cropping or `contain` for letterboxing. |
-| data-background-content-opacity  | 1       | Opacity of the background video on a 0-1 scale. 0 is transparent and 1 is fully opaque. |
+| data-background-opacity          | 1       | Opacity of the background video on a 0-1 scale. 0 is transparent and 1 is fully opaque. |
 
 ```html
 <section data-background-video="https://s3.amazonaws.com/static.slid.es/site/homepage/v1/homepage-video-editor.mp4,https://s3.amazonaws.com/static.slid.es/site/homepage/v1/homepage-video-editor.webm" data-background-video-loop data-background-video-muted>

js/reveal.js

@@ -934,7 +934,7 @@
 			backgroundRepeat: slide.getAttribute( 'data-background-repeat' ),
 			backgroundPosition: slide.getAttribute( 'data-background-position' ),
 			backgroundTransition: slide.getAttribute( 'data-background-transition' ),
-			backgroundContentOpacity: slide.getAttribute( 'data-background-content-opacity' )
+			backgroundOpacity: slide.getAttribute( 'data-background-opacity' )
 		};
 
 		// Main slide background element
@@ -968,7 +968,7 @@
 															data.backgroundRepeat +
 															data.backgroundPosition +
 															data.backgroundTransition +
-															data.backgroundContentOpacity );
+															data.backgroundOpacity );
 		}
 
 		// Additional and optional background properties
@@ -980,7 +980,7 @@
 		if( data.backgroundSize ) contentElement.style.backgroundSize = data.backgroundSize;
 		if( data.backgroundRepeat ) contentElement.style.backgroundRepeat = data.backgroundRepeat;
 		if( data.backgroundPosition ) contentElement.style.backgroundPosition = data.backgroundPosition;
-		if( data.backgroundContentOpacity ) contentElement.style.opacity = data.backgroundContentOpacity;
+		if( data.backgroundOpacity ) contentElement.style.opacity = data.backgroundOpacity;
 
 		element.appendChild( contentElement );
 		container.appendChild( element );