Components
Reusable building blocks in software that handle specific functions and can be combined to build complete applications.
What are Components?
Components are self-contained pieces of code that handle a specific part of your application's UI or functionality.
Think of them like LEGO blocks. Each component does one thing well (a button, a form, a navigation bar) and can be reused across your app without rewriting code.
Most modern frameworks like React, Vue, and Svelte are built around components. You write a component once, then drop it anywhere you need it. Change it in one place, and it updates everywhere.
Components can be as simple as a single button or as complex as an entire checkout flow. The key is they're isolated, testable, and composable.
Good to Know
How Vibe Coders Use Components
Frequently Asked Questions
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Related Terms
A set of rules that lets different software programs talk to each other and share data or functionality.
React components that run in the browser and can use hooks, event handlers, and browser APIs like localStorage.
A toolkit with pre-built code, libraries, and docs that lets you build apps for a specific platform without starting from scratch.
A React framework that handles routing, server rendering, and optimization out of the box so you can ship faster.
A JavaScript library for building user interfaces with reusable components. Created by Meta, powers Facebook, Instagram, and thousands of apps.
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