set 'hidden' attribute on all slides except the present (#457)
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@ -1362,6 +1362,9 @@ var Reveal = (function(){
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element.classList.remove( 'present' );
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element.classList.remove( 'present' );
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element.classList.remove( 'future' );
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element.classList.remove( 'future' );
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// http://www.w3.org/html/wg/drafts/html/master/editing.html#the-hidden-attribute
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element.setAttribute( 'hidden', '' );
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if( i < index ) {
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if( i < index ) {
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// Any element previous to index is given the 'past' class
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// Any element previous to index is given the 'past' class
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element.classList.add( reverse ? 'future' : 'past' );
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element.classList.add( reverse ? 'future' : 'past' );
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@ -1379,6 +1382,7 @@ var Reveal = (function(){
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// Mark the current slide as present
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// Mark the current slide as present
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slides[index].classList.add( 'present' );
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slides[index].classList.add( 'present' );
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slides[index].removeAttribute( 'hidden' );
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// If this slide has a state associated with it, add it
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// If this slide has a state associated with it, add it
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// onto the current state of the deck
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// onto the current state of the deck
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