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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.
You can view a demo of the easy way on Stackblitz, CodeSandbox and GitHub
For this specific use case we are using express for the server, and to enable FormData support in express we need the multer middleware, so if you're familiar with express at all this should look familiar,
You can view a demo of the hard way on Stackblitz, CodeSandbox and GitHub
By using a POST request handler we are able to recieve POST requests made to the /upload endpoint and respond back with the parsed FormData results, but unlike in the #easy-way, express is able to handle all the formatting allowing File responses to be as expected.
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