React js tutorials9/28/2023 To effectively use ReactJS, beginners must first know how to code with JavaScript and other front-end languages like HTML and CSS. ReactJS is not a coding language it’s a library for developing web applications in JavaScript. ReactJS is commonly used for building web applications or software that’s accessed through a web browser, such as a website. In addition to UI components, libraries can also contain resources that help developers manage other aspects of the web development process, such as debugging or testing. ReactJS libraries contain resources ranging from UI components such as textboxes and drop-down menus to special elements like animations, videos, and data visualizations. In ReactJS, components can maintain internal state data, which when updated will also update the rendered markup. The alternative is imperative, in which the code describes the step-by-step process to mutate the DOM.Ĭomponent-based: Encapsulated web components are independent, reusable chunks of code that return HTML. Footnote 2ĭeclarative: This kind of code describes the final desired state of the UI. React is declarative and component-based. In computer programming, libraries are collections of pre-made functional components that developers can reuse and adapt, which can save them the time and effort of building them from scratch. Footnote 1 Using React, individuals can manipulate the virtual document object model (DOM) of a web page, which is a structured representation of the existing elements or user interface (UI). ReactJS is an open-source JavaScript library for building highly interactive web applications developed and maintained by Meta.
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