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SurveyJS
Open-Source JSON Form Builder to Create Dynamic Forms Right in Your App. With SurveyJS form UI libraries, you can build and style forms in a fully-integrated drag & drop form builder, render them in your JS app, and store form submission data in any backend, inc. PHP, ASP.NET Core, and Node.js.
State is data that is created within the component and used only inside it. It is supposed to represent the actual state of the component in a given moment. For example, whether a button is clickable or not. Managing state is one of the biggest challenges in front-end projects. Complex applications have several pieces of state and sometimes managing it requires help from other libraries, like Redux, or even React’s own Context API.
Quoting React’s own documentation, it is an open-source JavaScript library, developed by Facebook, used for building user interfaces. A library is basically a set of functionalities developed and published by a third party that are not native to the language. React exists to facilitate the work of developers who need to create interactive user interfaces in web applications. The three main concepts of React are components, props and state.