Run results for: Number constructor vs unary plus vs parseInt

Test name	Executions per second
✓ Unary + (with NaN)	133,466,608 Ops/sec
parseInt (with NaN)	9,577,154 Ops/sec
Number (with NaN)	9,181,364 Ops/sec
Unary + (with float)	9,179,648 Ops/sec
Number (with float)	4,920,652 Ops/sec
Unary + (with integer)	4,878,483 Ops/sec
parseInt (with float)	4,652,590 Ops/sec
Unary + (with string integer)	4,170,423 Ops/sec
parseInt (with integer)	3,406,102 Ops/sec
Number (with integer)	3,378,666 Ops/sec
parseInt (with string integer)	3,270,821 Ops/sec
Number (with string integer)	3,231,286 Ops/sec
parseInt (with string float)	2,150,533 Ops/sec
Unary + (with string float)	2,088,617 Ops/sec
Number (with string float)	1,791,099 Ops/sec

Test name

Executions per second

✓ Unary + (with NaN)

133,466,608 Ops/sec

parseInt (with NaN)

9,577,154 Ops/sec

Number (with NaN)

9,181,364 Ops/sec

Unary + (with float)

9,179,648 Ops/sec

Number (with float)

4,920,652 Ops/sec

Unary + (with integer)

4,878,483 Ops/sec

parseInt (with float)

4,652,590 Ops/sec

Unary + (with string integer)

4,170,423 Ops/sec

parseInt (with integer)

3,406,102 Ops/sec

Number (with integer)

3,378,666 Ops/sec

parseInt (with string integer)

3,270,821 Ops/sec

Number (with string integer)

3,231,286 Ops/sec

parseInt (with string float)

2,150,533 Ops/sec

Unary + (with string float)

2,088,617 Ops/sec

Number (with string float)

1,791,099 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);