diff options
Diffstat (limited to 'plugin/highlight/highlight.js')
| -rw-r--r-- | plugin/highlight/highlight.js | 19 |
1 files changed, 12 insertions, 7 deletions
diff --git a/plugin/highlight/highlight.js b/plugin/highlight/highlight.js index 49ef64b..30fe947 100644 --- a/plugin/highlight/highlight.js +++ b/plugin/highlight/highlight.js @@ -115,18 +115,23 @@ var RevealHighlight = (function() { linesToHighlight = linesToHighlight || block.getAttribute( 'data-line-numbers' ); - if( typeof linesToHighlight === 'string' ) { + if( typeof linesToHighlight === 'string' && linesToHighlight !== '' ) { linesToHighlight.split( ',' ).forEach( function( lineNumbers ) { - lineNumbers = lineNumbers.split( '-' ) + // Ensure that we looking at a valid slide number (1 or 1-2) + if( /^[\d-]+$/.test( lineNumbers ) ) { - var lineStart = lineNumbers[0]; - var lineEnd = lineNumbers[1] || lineStart; + lineNumbers = lineNumbers.split( '-' ) - [].slice.call( block.querySelectorAll( 'table tr:nth-child(n+'+lineStart+'):nth-child(-n+'+lineEnd+')' ) ).forEach( function( lineElement ) { - lineElement.classList.add( 'highlight-line' ); - } ); + var lineStart = lineNumbers[0]; + var lineEnd = lineNumbers[1] || lineStart; + + [].slice.call( block.querySelectorAll( 'table tr:nth-child(n+'+lineStart+'):nth-child(-n+'+lineEnd+')' ) ).forEach( function( lineElement ) { + lineElement.classList.add( 'highlight-line' ); + } ); + + } } ); |