---
type: lesson
authors:
  - alex-patterson
cloudinary_convert: false
cover: 'https://media.codingcat.dev/image/upload/v1682101455/main-codingcatdev-photo/courses/svelte/transitions-and-animations.png'
excerpt: 'Make more appealing user interfaces by transitioning and animating DOM elements.'
published: published
slug: transitions-and-animations
start: April 17, 2023
stackblitz: 'https://stackblitz.com/github/CodingCatDev/svelte-course/tree/12-transitions-and-animations?embed=1&file=apps/svelte-site/src/routes/%2Bpage.svelte'
title: 'Learn Svelte: The Ultimate Guide - Transitions and Animations'
weight: 12
youtube: https://youtu.be/vsB33e4ND3k
---

Svelte is a modern and powerful front-end framework that allows developers to create dynamic and reactive user interfaces with ease. One of the key features of Svelte is its ability to create transitions and animations that enhance the user experience.

In this blog post, we will explore how to use Svelte transitions and animations with code examples.

## Transitions in Svelte

Transitions in Svelte are used to create smooth animations when an element is added, removed, or updated. Svelte provides several built-in transition functions that can be used out of the box, such as `fade`, `slide`, `fly`, and `scale`.

Let's take a look at an example of using the `fade` transition:

```svelte
<script>
	import { fade } from 'svelte/transition';

	let show = true;

	function toggle() {
		show = !show;
	}
</script>

<button on:click={toggle}>Toggle</button>

{#if show}
	<div transition:fade>Content that fades in and out</div>
{/if}
```

In the above code, we import the `fade` transition from the `svelte/transition` module. We also create a boolean variable `show` and a function `toggle` that toggles the value of `show` when the button is clicked.

When `show` is true, the content inside the `if` block is rendered with the `fade` transition. When `show` is false, the content is removed with the `fade` transition.

### Animations in Svelte

Animations in Svelte are used to create more complex and dynamic animations. Svelte provides several built-in animation functions that can be used out of the box, such as `spring`, `tweened`, and `crossfade`.

Let's take a look at an example of using the `spring` animation:

```svelte
<script>
	import { spring } from 'svelte/motion';

	let x = 0;

	function move() {
		x = x === 0 ? 100 : 0;
	}
</script>

<button on:click={move}>Move</button>

<div style="position: absolute; left: {x}px;" animate:{{ left: spring(x) }}>
	Content that moves left and right
</div>
```

In the above code, we import the `spring` animation from the `svelte/motion` module. We also create a variable `x` and a function `move` that toggles the value of `x` between `0` and `100` when the button is clicked.

The `div` element has a `style` attribute that positions it absolutely and sets its `left` property to the current value of `x`.

The `animate` directive on the `div` element uses the `spring` animation to animate the `left` property of the `div` element to the new value of `x` when it changes.

### Conclusion

Svelte transitions and animations provide powerful tools for creating dynamic and engaging user interfaces. With the built-in transition and animation functions, it's easy to add smooth and fluid animations to your Svelte components.

In this blog post, we've seen some examples of how to use transitions and animations in Svelte. However, there are many more functions and options available in the Svelte documentation, so be sure to check it out to learn more.
