Svelte 4 vs Marko: A Comprehensive Comparison

This website is powered by ItGalaxy.io

In the world of frontend development, Svelte 4 and Marko represent two innovative approaches to building web applications. While Svelte 4 takes a compiler-based approach, Marko offers a unique streaming-first architecture with powerful templating features. Let’s explore their differences and use cases.

Table of Contents

  1. Core Concepts
  2. Reactivity and State Management
  3. Templating and Components
  4. DOM Manipulation
  5. Event Handling
  6. Component Composition
  7. Form Handling
  8. Lifecycle Management
  9. Performance and Bundle Size
  10. Learning Curve
  11. Conclusion

Core Concepts

Svelte 4 and Marko take fundamentally different approaches to building web applications:

  • Svelte 4 is a compiler that transforms components into highly optimized vanilla JavaScript at build time
  • Marko is a streaming-first UI framework with a unique template syntax and powerful server-side rendering capabilities

Reactivity and State Management

State Declaration

Both frameworks offer different ways to declare and manage state:

Svelte 4’s Approach

<script>
  let name = "John";
</script>

<h1>Hello {name}</h1>

Svelte’s reactivity is built into the language itself, making state management intuitive.

Marko’s Approach

<let/name = "John"/>
<h1>Hello ${name}</h1>

Marko uses a concise template-based syntax for state declaration.

State Updates

Svelte 4

<script>
  let name = "John";
  name = "Jane";
</script>

<h1>Hello {name}</h1>

Marko

<let/name = "John"/>
<effect() { name = "Jane" }/>
<h1>Hello ${name}</h1>

Computed Values

Svelte 4’s Reactive Declarations

<script>
  let count = 10;
  $: doubleCount = count * 2;
</script>

<div>{doubleCount}</div>

Svelte uses the $: label to create reactive statements.

Marko’s Computed Properties

<let/count = 10/>
<const/doubleCount = count * 2/>
<div>${doubleCount}</div>

Templating and Styling

Basic Templates

Svelte 4

<h1>Hello world</h1>

Marko

<h1>Hello world</h1>

CSS Styling

Svelte 4

<h1 class="title">I am red</h1>
<button style="font-size: 10rem;">I am a button</button>

<style>
  .title {
    color: red;
  }
</style>

Marko

<h1.title>I am red</h1>
<button style={ fontSize: "10rem" }>I am a button</button>
<button class=scopedButton>I am a style-scoped button</button>

<style>
  .title {
    color: red;
  }
</style>
<style/{ scopedButton }>
  .scopedButton {
    font-size: 10rem;
  }
</style>

DOM Manipulation

List Rendering

Svelte 4

<script>
  const colors = ["red", "green", "blue"];
</script>

<ul>
  {#each colors as color (color)}
    <li>{color}</li>
  {/each}
</ul>

Marko

<ul>
  <for|color| of=["red", "green", "blue"]>
    <li>${color}</li>
  </for>
</ul>

Conditional Rendering

Svelte 4

<script>
  const TRAFFIC_LIGHTS = ["red", "orange", "green"];
  let lightIndex = 0;
  $: light = TRAFFIC_LIGHTS[lightIndex];
</script>

<p>
  You must
  {#if light === "red"}
    <span>STOP</span>
  {:else if light === "orange"}
    <span>SLOW DOWN</span>
  {:else if light === "green"}
    <span>GO</span>
  {/if}
</p>

Marko

static const TRAFFIC_LIGHTS = ["red", "orange", "green"];
<let/lightIndex = 0/>
<const/light = TRAFFIC_LIGHTS[lightIndex]/>

<p>
  You must
  <if=light === "red">STOP</if>
  <else-if=light === "orange">SLOW DOWN</else-if>
  <else>GO</else>
</p>

Event Handling

Click Events

Svelte 4

<script>
  let count = 0;
  function incrementCount() {
    count++;
  }
</script>

<p>Counter: {count}</p>
<button on:click={incrementCount}>+1</button>

Marko

<let/count = 0/>
<p>Counter: ${count}</p>
<button onClick() { count++ }>+1</button>

Component Composition

Props

Svelte 4

<script>
  import UserProfile from "./UserProfile.svelte";
</script>

<UserProfile
  name="John"
  age={20}
  favouriteColors={["green", "blue", "red"]}
  isAvailable
/>

Marko

<UserProfile
  name="John"
  age=20
  favouriteColors=["green", "blue", "red"]
  isAvailable
/>

Slots

Svelte 4

<script>
  import FunnyButton from "./FunnyButton.svelte";
</script>

<FunnyButton>Click me!</FunnyButton>

Marko

<FunnyButton>Click me!</FunnyButton>

Form Handling

Text Input

Svelte 4

<script>
  let text = "Hello World";
</script>

<p>{text}</p>
<input bind:value={text} />

Marko

<let/text = "Hello world"/>
<p>${text}</p>
<input value:=text/>

Select Input

Svelte 4

<script>
  let selectedColorId = 2;
  const colors = [
    { id: 1, text: "red" },
    { id: 2, text: "blue" },
    { id: 3, text: "green" },
    { id: 4, text: "gray", isDisabled: true },
  ];
</script>

<select bind:value={selectedColorId}>
  {#each colors as color}
    <option value={color.id} disabled={color.isDisabled}>
      {color.text}
    </option>
  {/each}
</select>

Marko

static const colors = [
  { id: 1, text: "red" },
  { id: 2, text: "blue" },
  { id: 3, text: "green" },
  { id: 4, text: "gray", isDisabled: true },
];
<let/selectedColorId = 2/>

<select onChange(event) { selectedColorId = event.target.value }>
  <for|{ id, isDisabled, text }| of=colors>
    <option value=id disabled=isDisabled selected=id === selectedColorId>
      ${text}
    </option>
  </for>
</select>

Performance and Bundle Size

Svelte 4

  • Zero runtime overhead (compiled to vanilla JS)
  • Smaller bundle size
  • Better initial load performance
  • Highly optimized DOM updates

Marko

  • Streaming-first architecture
  • Efficient server-side rendering
  • Progressive hydration
  • Automatic code splitting

Learning Curve

Svelte 4

  • Gentle learning curve
  • Familiar template syntax
  • Minimal boilerplate
  • Build setup required

Marko

  • Moderate learning curve
  • Unique template syntax
  • Powerful server features
  • Strong streaming capabilities

Conclusion

Choose Svelte 4 if you:

  • Want optimal runtime performance
  • Prefer writing less boilerplate
  • Need smaller bundle sizes
  • Want a more straightforward learning curve
  • Are building traditional web applications

Choose Marko if you:

  • Need powerful server-side rendering
  • Want streaming capabilities
  • Need progressive hydration
  • Are building large-scale applications
  • Value template-based development

Both frameworks excel in different scenarios:

  • Svelte 4 is perfect for modern, performance-focused applications with minimal boilerplate
  • Marko shines in applications where server-side rendering and streaming are crucial

The choice between Svelte 4 and Marko often depends on your project’s requirements:

  • Use Svelte 4 for building traditional web applications with optimal runtime performance
  • Use Marko for building large-scale applications that need powerful server-side rendering and streaming capabilities





Decouvrez plus d’Offres de la plateform ItGalaxy.io :

Découvrez notre gamme complète de services et formations pour accélérer votre carrière.

1. Nous contactez

  • Description: Besoin de Formation et des Solutions cloud complètes pour vos applications
  • Links:

2. Infra as a Service

  • Description: Infrastructure cloud évolutive et sécurisée
  • Links:

3. Projets Développeurs

4. Développeurs

5. Formations Complètes

6. Marketplace

7. Blogs

This website is powered by ItGalaxy.io