Both products are Javascript compilers, meaning they enable developers to program in higher level languages and then compile into Javascript. The main purpose of this is to utilize Ajax ...

Google's V8 JavaScript engine for Chrome ... would be enabled by switching JIT compilers off -- and hence why the better approach may be to create a custom sandbox for V8. As Groß also noted ...

“but also for making future JavaScript compiler research much easier. It’s now possible to write an optimization algorithm, plug it into the pipeline, and see what it does.” Firefox 18 is ...