Solid.js Has a Free API: The React Alternative That's Actually Fast

What if React was designed today, knowing everything we've learned about reactivity? You'd get Solid.js. What Is Solid.js? Solid.js is a reactive JavaScript framework that looks like React but performs like vanilla JS. No virtual DOM, no diffing, no reconciliation overhead. import { createSignal } from " solid-js " ; function Counter () { const [ count , setCount ] = createSignal ( 0 ); return ( < button onClick = { () => setCount ( count () + 1 ) } > Count: { count () } </ button > ); } Looks like React, right? But there's a crucial difference: this component function runs once . Only the {count()} expression re-executes when count changes. Not the entire component. Why Solid.js Is Faster React re-renders entire component trees. Solid updates only the exact DOM nodes that changed: // In React: entire component re-renders on any state change // In Solid: only the <span> text node updates function UserProfile () { const [ name , setName ] = createSignal ( " Alice " ); console . log ( "