Fragments

Fragments are used to highlight or incrementally reveal individual elements on a slide. Every element with the class fragment will be stepped through before moving on to the next slide.

The default fragment style is to start out invisible and fade in. This style can be changed by appending a different class to the fragment.

<p class="fragment">Fade in</p>
<p class="fragment fade-out">Fade out</p>
<p class="fragment highlight-red">Highlight red</p>
<p class="fragment fade-in-then-out">Fade in, then out</p>
<p class="fragment fade-up">Slide up while fading in</p>

Fade in

Fade out

Highlight red

Fade in, then out

Slide up while fading in

NameEffect
fade-outStart visible, fade out
fade-upSlide up while fading in
fade-downSlide down while fading in
fade-leftSlide left while fading in
fade-rightSlide right while fading in
fade-in-then-outFades in, then out on the next step
fade-in-then-semi-outFades in, then to 50% on the next step
growScale up
shrinkScale down
strikeStrike through
highlight-redTurn text red
highlight-greenTurn text green
highlight-blueTurn text blue
highlight-current-redTurn text red, then back to original on next step
highlight-current-greenTurn text green, then back to original on next step
highlight-current-blueTurn text blue, then back to original on next step

Nested Fragments

Multiple fragments can be applied to the same element sequentially by wrapping it, this will fade in the text on the first step, turn it red on the second and fade out on the third.

<span class="fragment fade-in">
<span class="fragment highlight-red">
<span class="fragment fade-out">
Fade in > Turn red > Fade out
</span>
</span>
</span>
Fade in > Turn red > Fade out

Fragment Order

By default fragments will be stepped through in the order that they appear in the DOM. This display order can be changed using the data-fragment-index attribute. Note that multiple elements can appear at the same index.

<p class="fragment" data-fragment-index="3">Appears last</p>
<p class="fragment" data-fragment-index="1">Appears first</p>
<p class="fragment" data-fragment-index="2">Appears second</p>

Appears last

Appears first

Appears second

Events

When a fragment is either shown or hidden reveal.js will dispatch an event.

Reveal.on( 'fragmentshown', event => {
// event.fragment = the fragment DOM element
} );
Reveal.on( 'fragmenthidden', event => {
// event.fragment = the fragment DOM element
} );