At first, Emscripten sounds like the punch line to a tech joke: a compiler that converts C/C++ code into Asm.js, a subset of JavaScript that can then run via a Web browser or in the Node.js framework.

If a JavaScript function is called more than six times, or loops more than 100 times, it gets fed into the next stage: a basic JIT compiler that produces executable code.

The announcement promises faster and smoother performance as the code the browser runs is multi-thread optimised. Enabling concurrent code compilation works to "reduce latency in Chrome" for the ...

In an effort to keep Firefox competitive with commercial browsers and handle the ever-heavier burden that interactive webpages put on browsers’ scripting engines, Mozilla is working on a new ...