Object key lookup test

StupidLookupTester.js

var o = {};

for( var a = 0; a < 100; a++ ) {
	o['a'+a] = a;
}

var n;
var tickNow;
var tickDone;

tickNow = Date.now();
var a = 0;
for( n = 0; n < 100000; n++ ) {
	o[a+(n%100)];
}
tickDone = Date.now();

console.log( "some:", tickDone - tickNow, n / ( tickDone - tickNow ) );




for( ; a < 1000; a++ ) {
	o['a'+a] = a;
}


tickNow = Date.now();
for( n = 0; n < 100000; n++ ) {
	a += o[a+(n%1000)];
}
tickDone = Date.now();

console.log( "some:", tickDone - tickNow, n / ( tickDone - tickNow ) );



for( ; a < 10000; a++ ) {
	o['a'+a] = a;
}


tickNow = Date.now();
for( n = 0; n < 100000; n++ ) {
	a += o[a+(n%10000)];
}
tickDone = Date.now();

console.log( "some:", tickDone - tickNow, n / ( tickDone - tickNow ) );





for( ; a < 100000; a++ ) {
	o['a'+a] = a;
}


tickNow = Date.now();
for( n = 0; n < 100000; n++ ) {
	a += o[a+(n%100000)];
}
tickDone = Date.now();

console.log( "some:", tickDone - tickNow, n / ( tickDone - tickNow ) );



for( ; a < 100000; a++ ) {
	o['a'+a] = a;
}


tickNow = Date.now();
for( n = 0; n < 100000; n++ ) {
	a += o[a+(n%100000)];
}
tickDone = Date.now();

console.log( "some:", tickDone - tickNow, n / ( tickDone - tickNow ) );





for( ; a < 1000000; a++ ) {
	o['a'+a] = a;
}


tickNow = Date.now();
for( n = 0; n < 100000; n++ ) {
	a += o[a+(n%100000)];
}
tickDone = Date.now();

console.log( "some:", tickDone - tickNow, n / ( tickDone - tickNow ) );





for( ; a < 10000000; a++ ) {
	o['a'+a] = a;
}


tickNow = Date.now();
for( n = 0; n < 100000; n++ ) {
	a += o[a+(n%100000)];
}
tickDone = Date.now();

console.log( "some:", tickDone - tickNow, n / ( tickDone - tickNow ) );