-
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.
Many people use various means to write the duration of WebM files produced by MediaRecorder on Chrome/Chromium, which produces WebM files without duration set (https://github.com/legokichi/ts-ebml; https://github.com/davedoesdev/webm-muxer.js). Technically that API is not in Ecmascript specification. JavaScript can be and is used at the front-end to implement.
Many people use various means to write the duration of WebM files produced by MediaRecorder on Chrome/Chromium, which produces WebM files without duration set (https://github.com/legokichi/ts-ebml; https://github.com/davedoesdev/webm-muxer.js). Technically that API is not in Ecmascript specification. JavaScript can be and is used at the front-end to implement.