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Staggering data-emergence Toggle #19

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shshaw opened this issue Jan 17, 2018 · 0 comments
Open

Staggering data-emergence Toggle #19

shshaw opened this issue Jan 17, 2018 · 0 comments

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@shshaw
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shshaw commented Jan 17, 2018

When multiple items are suddenly made visible, it would be great to have an option that would stagger the [data-emergence=visible] change based on source order. This allows for some really appealing intro animations for sections of a site. This prevents having to hard-code transition-delay or animation-delay in the CSS, which will cause unnecessary delays if items are not made visible at the same time.

For example:

<body>
<div class="scene-1" data-emergence="hidden" style="height: 33vh"></div>
<div class="scene-2" data-emergence="hidden" style="height: 33vh"></div>
<div class="scene-3" data-emergence="hidden" style="height: 33vh"></div>
</body>

JS:

emergence.init({
   stagger: 100 // Delay in ms between item attribute changes
});

Because all items are revealed in the viewport at the same time and the stagger option is set:
.scene-1 gets data-emergence=visible change right away
.scene-2 gets data-emergence=visible after 100ms
.scene-3 gets data-emergence=visible after 200ms
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@shshaw