... especially since pthreads (Mozilla pthreads, Chromium pthreads) and SIMD (simd.js, Chromium SIMD, simd.js in asm.js) are coming to JavaScript. There are two main benefits WebAssembly provides: The kind of binary format being considered for WebAssembly can be natively decoded much faster than JavaScript can be parsed (experiments show more than 20× faster). On mobile, large compiled codes can e