JAVASCRIPT
Animating Element Transitions with Vue's <Transition> Component
Implement smooth enter/leave animations for elements or components using Vue 3's built-in <Transition> component and CSS transitions for dynamic UIs.
// App.vue
<template>
<div>
<h1>Vue Transition Example</h1>
<button @click="show = !show">Toggle Box</button>
<Transition name="fade">
<div v-if="show" class="animated-box"></div>
</Transition>
<Transition name="slide-fade">
<p v-if="show">Hello, this is a sliding and fading paragraph!</p>
</Transition>
</div>
</template>
<script setup>
import { ref } from 'vue';
const show = ref(true);
</script>
<style>
/* Common styles for the box */
.animated-box {
width: 100px;
height: 100px;
background-color: crimson;
margin-top: 20px;
border-radius: 8px;
}
/* Fade Transition */
.fade-enter-active, .fade-leave-active {
transition: opacity 0.5s ease;
}
.fade-enter-from, .fade-leave-to {
opacity: 0;
}
/* Slide-Fade Transition */
.slide-fade-enter-active {
transition: all 0.3s ease-out;
}
.slide-fade-leave-active {
transition: all 0.8s cubic-bezier(1, 0.5, 0.8, 1);
}
.slide-fade-enter-from, .slide-fade-leave-to {
transform: translateX(20px);
opacity: 0;
}
</style>
How it works: This snippet demonstrates how to use Vue 3's `<Transition>` component to add enter/leave animations to elements. By wrapping an element with `<Transition>` and giving it a `name` prop (e.g., `fade` or `slide-fade`), Vue automatically applies specific CSS classes at different stages of the transition (e.g., `.fade-enter-from`, `.fade-enter-active`, `.fade-leave-to`). These classes can then be targeted with CSS to define transition properties like `opacity`, `transform`, and `transition` duration, creating smooth visual effects when elements are conditionally rendered or removed.