var start = Date.now(); var val; for(var i=0;i<1000000;i++){ val=false; val=false; } console.log(Date.now()-start);
V8 (Node.js and Chrome) seems to optimize this loop out, so you can do a billion iterations really fast. Firefox gives a more realistic indication of performance: This takes about 700 ms for a million iterations on my machine. Setting it once instead of twice cuts off about 100ms. Harbs > On Jun 11, 2017, at 10:56 AM, Justin Mclean <jus...@classsoftware.com> wrote: > >> Safe, but inefficient at times. > > So far I not seen any inefficiency in fact the opposite. But sure there may > be specific cases that perform better, please post any you find to the list.