Our great sponsors
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turbo
The speed of a single-page web application without having to write any JavaScript (by hotwired)
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accessibility
Guidelines and tools we use at 37signals to make sure our apps are accessible (by basecamp)
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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.
In the above snippet, this refers to StreamElement, which is the custom element underpinning . The templateContent getter is defined by this element.
Basecamp's accessibility guide is publicly available and a fantastic resource to learn the ropes.
I also recommend checking out the docs for Stimulus and Turbo to familiarise yourself with all their features and the APIs used in this series.