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.
ckeditor v4 had allowedContent and extraAllowedContent configurations to allow classes on elements. Searching for "ckeditor 5 allowedContent" led me to https://github.com/ckeditor/ckeditor5-react/issues/209 which seems to indicate to me that they've gone a whole different route for configuration and I'll leave it to you to deep dive into that.
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