What are Vue transition groups and how do I use them?

What are Vue transition groups and how do I use them?

Vue transition groups are a feature that allows you to apply transition effects when items in a list are added, removed, or reordered. They help create smooth animations for dynamic lists.

Can you show me a basic example of how to implement a transition group?

Sure! Here's a simple example:

<template>
  <transition-group name="fade" tag="div">
    <div v-for="item in items" :key="item.id">{{ item.text }}</div>
  </transition-group>
</template>

What CSS classes do I need to define for the transitions?

You need to define classes like fade-enter-active, fade-leave-active, fade-enter, and fade-leave-to to control the animations. For example:

.fade-enter-active, .fade-leave-active {
  transition: opacity 0.5s;
}
.fade-enter, .fade-leave-to {
  opacity: 0;
}

Can I customize the transition effects?

Yes, you can customize the transition effects by modifying the CSS properties in your classes. You can change duration, timing functions, and even add transforms.