on:click on:input on:submit
Attach DOM event listeners directly in Svelte template syntax.
on:click on:input on:submit is a free Sveltejs Academy lesson on CoddyKit. This is lesson 1 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.
Event Directives
Use on: followed by the DOM event name to attach a listener.
<button on:click={handleClick}>Click</button>Inline Handlers
Pass an arrow function for inline logic.
<button on:click={() => count++}>+</button>Named Handlers
Define a function in script and reference it by name.
<script>
function save() { /* ... */ }
</script>
<button on:click={save}>Save</button>Receiving the Event Object
The handler receives the native Event as its argument.
function onChange(e) { value = e.target.value; }on:input
The input event fires whenever the user types in a text field.
<input on:input={(e) => text = e.target.value} />on:submit
Attach to a <form> to handle submission. Use modifiers to prevent default.
<form on:submit|preventDefault={save}>...</form>on:keydown
Listen for keyboard events on inputs or globally on the document.
<input on:keydown={(e) => e.key === "Enter" && submit()} />on:change vs on:input
The change event fires when the user finishes editing; input fires on every keystroke.
Mouse Events
Standard DOM mouse events all work: mouseenter, mouseleave, mousemove.
Touch Events
Mobile touch events like touchstart are supported the same way.
<div on:touchstart={start} on:touchend={end}>Multiple Listeners
You can attach multiple on: directives to the same element for different events.
<button on:click={a} on:focus={b}>...</button>Quick Check
What syntax attaches a click handler?
Recap
Use on:event directives for any DOM event. The handler can be inline or a named function and receives the Event.
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Frequently Asked Questions
Is the “on:click on:input on:submit” lesson free?
Yes — the full text of “on:click on:input on:submit” 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 “on:click on:input on:submit”?
Attach DOM event listeners directly in Svelte template syntax. 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 1 of 4.
How long does the “on:click on:input on:submit” 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
- on:click on:input on:submit
- Event Modifiers: preventDefault stopPropagation once
- Custom Events with createEventDispatcher
- Forwarding Events with on:click