Transition Parameters: duration delay easing
Customize transitions by passing duration, delay, and easing parameters.
Transition Parameters: duration delay easing is a free Sveltejs Academy lesson on CoddyKit. This is lesson 2 of 4. You can read the complete lesson below for free — then practise it hands-on in the browser with a built-in code editor and a 24/7 AI tutor. It is part of the Sveltejs Academy learning path, and your progress syncs across the web and the CoddyKit app. The Sveltejs Academy course includes 4 lessons in total.
The Parameter Object
All transitions accept an options object as a second argument.
<p transition:fade={{ duration: 600, delay: 200 }}>duration
Total animation length in milliseconds. Default 400ms.
delay
Wait before starting the animation. Useful for sequenced UI.
easing
Function that maps linear progress (0..1) to a custom curve. Defaults to linear.
Built-in Easing Functions
Import from svelte/easing: linear, quadIn, cubicOut, elasticOut, etc.
import { elasticOut } from "svelte/easing";Per-transition Options
Each transition has its own params. Fly adds x and y; scale adds start.
Choosing Durations
Short durations (100-200ms) for micro-interactions, longer (400-700ms) for page transitions.
Reactive Parameters
Parameter values can depend on reactive state.
<p transition:fly={{ x: dir * 200 }}>...Default Behavior
If you omit the param object, sensible defaults apply.
Match the Design
Tune duration and easing until the motion feels right; test on a real device.
Accessibility
Respect prefers-reduced-motion by reducing duration or skipping transitions.
Quick Check
Where do easing functions come from?
Recap
Tweak duration, delay, and easing (from svelte/easing) for the right feel.
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Frequently Asked Questions
Is the “Transition Parameters: duration delay easing” lesson free?
Yes — the full text of “Transition Parameters: duration delay easing” is free to read here on the web. To practise it interactively (a built-in code editor and a 24/7 AI tutor) and unlock the rest of the Sveltejs Academy course, upgrade to CoddyKit PRO. The Sveltejs Academy course includes 4 lessons in total.
What will I learn in “Transition Parameters: duration delay easing”?
Customize transitions by passing duration, delay, and easing parameters. You practise Sveltejs Academy with hands-on code you run directly in the browser, and a 24/7 AI tutor answers your questions as you work through the lesson.
Do I need any experience to start Sveltejs Academy?
No prior experience is required. Sveltejs Academy on CoddyKit is structured for beginners through advanced learners, so you can start here or from the beginning and move at your own pace. This is lesson 2 of 4.
How long does the “Transition Parameters: duration delay easing” lesson take?
Most CoddyKit lessons take about 5–10 minutes. Each one is bite-sized and interactive, so you make steady progress and pick up exactly where you left off across the web and the app.
Can I write and run code in this Sveltejs Academy lesson?
Yes. Every Sveltejs Academy lesson includes a built-in code editor, so you write and run real code right in your browser and get instant AI feedback — no local setup required.
All lessons in this course
- transition:fade and transition:fly
- Transition Parameters: duration delay easing
- in: and out: for Asymmetric Transitions
- transition:draw for SVG Paths