MDN Web Docs documents HTML, CSS, and ECMAScript features along with inline code snippets, helpful examples, and browser compatibility information. Many web developers use MDN Web Docs as an easy-to-browse and accessible alternative to the various W3C, WHATWG and ECMAScript specifications. MDN Web Docs pages, including sections on compatibility information, are maintained on GitHub where contributors can open a pull request to make suggestions or mark a change in browser compatibility status. With a few exceptions, compatibility information for a given feature and browser pair is usually manually evaluated by MDN maintainers, and marked as “full support,” “no support,” or “compatibility unknown.”
The MDN Test262 Report embed is currently implemented by rendering an iframe from
test262.report/embed/ into the MDN page for the newest ECMAScript features, including:
This MDN feature will be treated as an experiment with the goal of testing whether MDN readers find the additional information helpful.
Embed Your Own Report
These embeddable iframes can also be built and accessed from Test262 Report, by clicking the Embed button in the top right of the results chart. The embed code will include a link to a report view for the level of detail and date of the page you are on when you click it, or to an evergreen report based on the latest data, if you so choose.
We’d also like to invite the ECMAScript, Node.js, Web Developer and Engine Implementer communities to embed these reports in your future analyses of web platform feature interoperability!