With ngAnimate, you can easily animate certain events (see
directive support
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). We'll make use of ngClass animations to style an element on changed binding value.
Say we have a slider and a separate details container. Each time the slider changes, we want to "flash" the details container by hiding it and fading it back in.
HTML
Add a custom class to the element you want to animate, i.e. the details container:
<div class="details slide-index-{{ currentSlideIndex }}">
{{ content }}
</div>
ngClass will be taking care of updating the details container's slide-index-N class; e.g. when the currentSlideIndex changes from 4 to 5, the slide-index-4 class is being removed and the slide-index-5 class is being added.
CSS
With ngAnimate included,
ngClass will add certain animation classes
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. In the above example, it will add slide-index-4-remove and slide-index-5-add in addition to the classes themselves. We can reference these classes in CSS:
.details {
transition: opacity 1s;
opacity: 1;
}
.details[class*="-remove"] {
transition: none; // No transition on class removal -> instant hiding
opacity: 0;
}
When the details container has the class slide-index-4-remove, the opacity is set to 0 without transition. The class is removed afterwards, having the container fade back in as defined for .details.
