React Components: Your UI Building Blocks
Think of React Components as custom, reusable HTML tags you create with JavaScript functions. Use them to build everything from buttons to page layouts, speeding up development.
React Components are JavaScript functions that return UI markup, acting like custom building blocks for your app. They combine HTML-like syntax (JSX), CSS, and logic into one unit. This lets you build a complex UI by composing smaller pieces, like using `<Profile>` and `<Post>` components to create a feed. The main footgun: component function names must start with a capital letter (e.g., `MyComponent`), or React will treat them as plain HTML tags and they will fail to render.
Read the original → react.dev
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