Benchmarking JavaScript

gistfile1.js

start = new Date();
for(i=0; i<1000000; i++){String(Math.floor(Math.random()*1000000))};
console.log(new Date()-start)
>> 2054

start = new Date();
for(i=0; i<1000000; i++){String(~~(Math.random()*1000000))};
console.log(new Date()-start)
>> 1752

start = new Date();
for(i=0; i<1000000; i++){~~(Math.random()*1000000)};
console.log(new Date()-start)

>> 1218

#Testing array subscription
array = [];
for(i=0; i<10000; i++){array.push(i)};

start = new Date();
for(i=0; i<100000; i++){array['5000']};
console.log(new Date() - start);
>> 140

start = new Date();
for(i=0; i<100000; i++){array[5000]};
console.log(new Date() - start);
>> 125

start = new Date();
for(i=0; i<100000; i++){array[String(~~(Math.random()*1000000))]};
console.log(new Date() - start);
>> 317

start = new Date();
for(i=0; i<100000; i++){array[~~(Math.random()*1000000)]};
console.log(new Date() - start);
>> 239

random = ~~(Math.random()*1000000); randoms = String(random); array[random] === array[randoms]
>> true

object_ = {1:'a', '2': 4};
object_['1'] == object_[1]
>> true
object_['2'] == object_[2]
>> true