From a0a9aa78219ad54c1a8be2c478b91bc4ccfa36c1 Mon Sep 17 00:00:00 2001 From: Hakim El Hattab Date: Thu, 23 Nov 2017 15:45:15 +0100 Subject: [PATCH] optimize use of getSlideBackground by avoiding index lookup --- js/reveal.js | 11 +++++------ 1 file changed, 5 insertions(+), 6 deletions(-) diff --git a/js/reveal.js b/js/reveal.js index f125c555..9a43903e 100644 --- a/js/reveal.js +++ b/js/reveal.js @@ -3200,8 +3200,7 @@ // Show the corresponding background element - var indices = getIndices( slide ); - var background = getSlideBackground( indices.h, indices.v ); + var background = getSlideBackground( slide ); if( background ) { background.style.display = 'block'; @@ -3288,8 +3287,7 @@ slide.style.display = 'none'; // Hide the corresponding background element - var indices = getIndices( slide ); - var background = getSlideBackground( indices.h, indices.v ); + var background = getSlideBackground( slide ); if( background ) { background.style.display = 'none'; } @@ -3858,13 +3856,14 @@ * defined, have a background element so as long as the * index is valid an element will be returned. * - * @param {number} x Horizontal background index + * @param {mixed} x Horizontal background index OR a slide + * HTML element * @param {number} y Vertical background index * @return {(HTMLElement[]|*)} */ function getSlideBackground( x, y ) { - var slide = getSlide( x, y ); + var slide = typeof x === 'number' ? getSlide( x, y ) : x; if( slide ) { return slide.slideBackgroundElement; }