Run results for: Number constructor vs unary plus vs parseInt

Test name	Executions per second
✓ Unary + (with NaN)	44,112,748 Ops/sec
parseInt (with NaN)	3,848,805 Ops/sec
Number (with NaN)	3,642,809 Ops/sec
Unary + (with float)	3,203,687 Ops/sec
Unary + (with integer)	1,772,465 Ops/sec
Unary + (with string integer)	1,730,642 Ops/sec
Number (with float)	1,729,817 Ops/sec
parseInt (with float)	1,665,004 Ops/sec
Number (with integer)	1,268,492 Ops/sec
Number (with string integer)	1,193,836 Ops/sec
parseInt (with integer)	1,185,470 Ops/sec
parseInt (with string integer)	1,167,552 Ops/sec
Unary + (with string float)	986,506 Ops/sec
parseInt (with string float)	898,257 Ops/sec
Number (with string float)	772,786 Ops/sec

Test name

Executions per second

✓ Unary + (with NaN)

44,112,748 Ops/sec

parseInt (with NaN)

3,848,805 Ops/sec

Number (with NaN)

3,642,809 Ops/sec

Unary + (with float)

3,203,687 Ops/sec

Unary + (with integer)

1,772,465 Ops/sec

Unary + (with string integer)

1,730,642 Ops/sec

Number (with float)

1,729,817 Ops/sec

parseInt (with float)

1,665,004 Ops/sec

Number (with integer)

1,268,492 Ops/sec

Number (with string integer)

1,193,836 Ops/sec

parseInt (with integer)

1,185,470 Ops/sec

parseInt (with string integer)

1,167,552 Ops/sec

Unary + (with string float)

986,506 Ops/sec

parseInt (with string float)

898,257 Ops/sec

Number (with string float)

772,786 Ops/sec

Tests:

Number (with string integer)
var numberStrInt = Number(Math.floor(1000 * Math.random()).toString());
Unary + (with string integer)
var unaryStrInt = +Math.floor(1000 * Math.random()).toString();
parseInt (with string integer)
var parseStrInt = parseInt(Math.floor(1000 * Math.random()).toString(), 10);
Number (with string float)
var numberStrFloat = Number((1000 * Math.random()).toString());
Unary + (with string float)
var unaryStrFloat = +(1000 * Math.random()).toString();
parseInt (with string float)
var parseStrFloat = parseInt((1000 * Math.random()).toString(), 10);
Number (with integer)
var numberNumInt = Number(Math.floor(1000 * Math.random()));
Unary + (with integer)
var unaryNumInt = +Math.floor(1000 * Math.random());
parseInt (with integer)
var parseNumInt = parseInt(Math.floor(1000 * Math.random()), 10);
Number (with float)
var numberNumFloat = Number(1000 * Math.random());
Unary + (with float)
var unaryNumFloat = +(1000 * Math.random());
parseInt (with float)
var parseNumFloat = parseInt((1000 * Math.random()), 10);
Number (with NaN)
var numberNaN = Number("hello");
Unary + (with NaN)
var unaryNaN = +("hello");
parseInt (with NaN)
var parseNaN = parseInt("hello", 10);