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Exploring SolidJS for React Developers

Exploring SolidJS for React Developers

GX Anshu | Mon Aug 14 2023

If you’re a React developer curious about trying out new technologies, you’ve likely heard of SolidJS. 🎉 It’s an exciting alternative to React, offering some unique features and performance benefits. In this blog post, we’ll walk you through the main differences between SolidJS and React, along with a migration guide to help you make the switch. Let’s dive in! 💡

Understanding the Differences

link $Understanding the Differences

SolidJS offers compiled reactivity and optimized rendering, updating only necessary UI parts. ReactJS uses a virtual DOM and re-renders whole components this makes application slow. SolidJS’s createStore,createSignal enhance state management.

1. Reactivity Model 🔄

link $1. Reactivity Model 🔄

In React, components re-render when their state or props change. SolidJS takes a different approach by using a compiled reactivity system. Instead of a virtual DOM, SolidJS use a reactive data structure that tracks dependencies between state variables and automatically updates only the necessary parts of the UI whenever the data changes. This results in faster updates and reduced overhead.

2. Component Creation 🧩

link $2. Component Creation 🧩

Creating components in SolidJS is quite similar to React. You use the createSignal function to define state variables, and the createEffect function to handle side effects. This ensures that your components are easy to reason about and follow a functional programming paradigm. but here createEffect have different approch then useEffect in React.

Example of creating a simple component:

import { createSignal } from "solid-js";

function Counter() {
  const [count, setCount] = createSignal(0);

  return (
      {/*here count is a function so you have to call it*/}
      <p>Count: {count()}</p>
      <button onClick={() => setCount(count() + 1)}>Increment</button>

3. Global State Management 🌐

link $3. Global State Management 🌐

While React developers are informed to libraries like Redux or context API for state management, SolidJS offers a built-in solution called createStore. It provides a simple way to manage global state across your application without additional dependencies.

Example of using createStore:

import { createStore, createSignal } from "solid-js";

const store = createStore({
  count: 0,

function App() {
  const [state, setState] = store;

  return (
      <p>Count: {state.count}</p>
      <button onClick={() => setState("count", state.count + 1)}>

4. Rerendering Optimization ⚡️

link $4. Rerendering Optimization ⚡️

SolidJS minimizes unnecessary re-renders by tracking dependencies at a low level. This means that only the specific parts of the UI affected by a state change will be updated. As a result, your application can achieve better performance compared to traditional virtual DOM-based frameworks.

Migration Guide: Moving from React to SolidJS

link $Migration Guide: Moving from React to SolidJS

Migrating from React to SolidJS can be a smooth process, thanks to their similar component structure and reactivity concepts. Here’s a step-by-step guide to help you get started:

  1. Install SolidJS: Begin by adding SolidJS to your project using your preferred package manager.

    npm install solid-js solid-js/web
  2. Rewrite Components: Rewrite your React components using SolidJS syntax, replacing useState with createSignal, and useEffect with createEffect.

  3. Update State Management: If you were using Redux or other state management solutions, consider using SolidJS’s createStore for a more integrated approach.

  4. Refactor Rerender Logic: Since SolidJS reactivity works differently, review your component’s re-rendering logic. SolidJS will handle most optimizations, but you might need to adjust certain parts of your code.

  5. Run Tests: Thoroughly test your application after migration to ensure everything is functioning as expected.

  6. Performance Profiling: Utilize SolidJS’s performance analysis tools to identify any potential bottlenecks and optimize your application further.

Remember, transitioning to SolidJS might take some time, but the potential performance gains and cleaner reactivity model can greatly benefit your application in the long run.

SolidJS offers an innovative reactivity model, efficient rendering, and a concise API that can greatly enhance your web development experience. By following this migration guide, you can smoothly transition from React to SolidJS and explore the unique features it brings to the table. Embrace the change and enjoy building high-performance applications with SolidJS! 🚀🎈

Give SolidJS a try, and you might just find a new favorite in the world of frontend development! 🌟👩‍💻👨‍💻