Table of Contents
“Hello, World!” Svelte style
State management
Reducers and stores
React APIs with Svelte
What about useState?
Are two-way bindings really evil?
Side effects in Svelte, without the tears (or stale closures)
Spicing things up with actions
But wait, there’s more!
Odds and Ends
Interested in giving Svelte a try?
Home Web Front-end CSS Tutorial Svelte for the Experienced React Dev

Svelte for the Experienced React Dev

Mar 24, 2025 am 09:26 AM

Svelte for the Experienced React Dev

This post is an accelerated introduction to Svelte from the point of view of someone with solid experience with React. I’ll provide a quick introduction, and then shift focus to things like state management and DOM interoperability, among other things. I plan on moving somewhat quickly, so I can cover a lot of topics. At the end of the day, I’m mainly hoping to spark some interest in Svelte.

For a straightforward introduction to Svelte, no blog post could ever beat the official tutorial or docs.

“Hello, World!” Svelte style

Let’s start with a quick tour of what a Svelte component looks like.

<script>
  let number = 0;
</script>

<style>
  h1 {
    color: blue;
  }
</style>

<h1>Value: {number}</h1>

<button on:click={() => number++}>Increment</button>
<button on:click={() => number--}>Decrement</button> 
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That content goes in a .svelte file, and is processed by the Rollup or webpack plugin to produce a Svelte component. There’s a few pieces here. Let’s walk through them.

First, we add a

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