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Scala, developed as a functional and object-oriented language for the JVM, is now multiplatform, with developers using it in abundance on JavaScript via Scala.js, Scala founder Martin Odersky says.

With Scala.js, developers write code in Scala, and that code is then compiled to JavaScript, analogous to using Microsoft's TypeScript. Developers can leverage their Scala skills in Web development. "[Scala is] very popular on JavaScript now," Odersky said at the Scala Days conference in San Francisco.

Scala "is no longer essentially a single-host language," Odersky said. "Now, essentially Scala.js is a grown-up language. People use it for production code." Part of the Scala project, Scala.js, also is high-performing, he added. "In quite a few benchmarks, Scala.js beats native JavaScript, which is quite remarkable. And it also deploys very, very fast," as well as offering type safety and interoperability with JavaScript libraries.

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