Please : > Yes, they do, via Web Workers. Which are not part of the javascript spec, it is DOM related. And web workers were never meant to increase performan

Please : > Yes, they do, via Web Workers. Which are not part of the javascript spec, it is DOM related. And web workers were never meant to increase performance. In fact in practice they don't, they often make code slower. They just guarantee that the UI thread will not block. > new Array(10)? Which doesn't allow any specific runtime optimization as the array can be resized at anytime > Uint8Array, Uint16Array, Uint32Array? Which doesn't give me an integer of a specific size BUT any array of integer.