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.
surveyjs.io
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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 certainly could build a mock server, but I don't recommend doing so. Facebook's Graph API is pretty complicated with a lot of poorly documented features and it changes over time. What could work for you is to record the communication with the server and then "replay" the traffic for tests and development (once you figure out the basic requests / responses). We use Nock for that in Node.js, but I believe most languages have something similar.
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