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AnyChart
AnyChart is a lightweight and robust JavaScript charting solution with great API and documentation. The chart types and unique features are numerous, the library works easily with any development stack.
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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.
Building a JavaScript pie graph from scratch can be a daunting task, but we're in luck! There are plenty of JS charting libraries that provide pre-built functions and features, making data visualization development seamless. For this tutorial, I’ve chosen the AnyChart JS library, suitable for beginners and experts alike, but feel free to use your favorite one as the logic of the process will be the same.