Svelte – Component Events

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Halo guys welcome back… kali ini kita coba ke materi Component Events ya… jadi kita akan mencoba membuat alert melalui dispatch function..

pertama buat file components/alert/AlertCompEventsComp.svelte

<script>
	import { createEventDispatcher } from 'svelte';

	const dispatch = createEventDispatcher();

	function sayHello() {
		dispatch('pesan', {
			isi: 'Hello Guysss!'
		});
	}
</script>

<button on:click={sayHello}>
	Click to say hello
</button>

Kemudian kita buat file baru lagi components/AlertCompEvents.svelte

<script>
	import AlertCompEventsComp from './alert/AlertCompEventsComp.svelte';

	function handleMessage(event) {
		alert(event.detail.isi);
	}
</script>

<AlertCompEventsComp on:pesan={handleMessage}/>

dan kita import kedalam App.svelte

<script>
	
	import Counter from './components/Counter.svelte'
	import Toggle from './components/Toggle.svelte'
	import Img from './components/Img.svelte'
	import String from './components/String.svelte'
	import Statement from './components/Statement.svelte'
	import Condition from './components/Condition.svelte';
	import Nested from './components/Nested.svelte';
	import Info from './components/Info.svelte';
	import IfLogin from './components/IfLogin.svelte'
	import Comparison from './components/Comparison.svelte'
	import EachYoutube from './components/EachYoutube.svelte'
	import KeyEachThing from './components/KeyEachThing.svelte'
	import GenerateNumber from './components/GenerateNumber.svelte';
	import MouseMove from './components/MouseMove.svelte'
	import MouseMoveInlineHandler from './components/MouseMoveInlineHandler.svelte';
	import EventModifier from './components/EventModifier.svelte';
	import AlertCompEvent from './components/AlertCompEvents.svelte'

	export let name;

	const pkg = {
		name: 'svelte',
		version: 3,
		speed: 'blazing',
		website: 'https://svelte.dev'
	};
</script>

<main>
	<h1>Hello {name}!</h1>
	<p>Visit the <a href="https://svelte.dev/tutorial">Svelte tutorial</a> to learn how to build Svelte apps.</p>
	<Counter />
	<Toggle />
	<Img />
	<String />
	<Statement />
	<Condition />
	<Nested answer={42}/>
	<Nested/>
	<Info {...pkg}/>
	<IfLogin />
	<Comparison />
	<EachYoutube />
	<KeyEachThing />
	<GenerateNumber />
	<MouseMove />
	<MouseMoveInlineHandler />
	<EventModifier />
	<AlertCompEvent />

</main>

<link href="https://fonts.googleapis.com/css?family=Overpass:100,400" rel="stylesheet">

dan resultnya :

jadi kita sudah mengetahui cara untuk passing data pesan untuk masuk kedalam function dari suatu component … okay untuk link githubnya ada disini … cyaaa…