React Fundamentals Explained: SPA, Components, JSX, Props and Rendering

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React is a JavaScript library designed for building user interfaces, distinct from frameworks in that developers control when and how it is invoked. It is widely used to create Single Page Applications, where UI sections update dynamically without requiring a full browser page reload. React UIs are built from reusable components — modular pieces such as navbars or product cards — that can be combined and reused across an application. JSX enables developers to write HTML-like syntax within JavaScript, supporting embedded expressions for values, calculations, and conditional rendering. Data is shared between components via props, which pass information from parent to child components, while React's rendering process efficiently updates only the parts of the UI that change when state is modified.

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Developer releases mini-waf, a lightweight npm package to filter Node.js API requests

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