Run results for: Number constructor vs unary plus vs parseInt

Test name	Executions per second
✓ Unary + (with NaN)	1,040,272,320 Ops/sec
Number (with NaN)	7,102,502 Ops/sec
parseInt (with NaN)	7,018,574 Ops/sec
Unary + (with float)	6,534,966 Ops/sec
Number (with float)	3,431,767 Ops/sec
Unary + (with integer)	3,402,229 Ops/sec
Unary + (with string integer)	3,237,634 Ops/sec
parseInt (with float)	3,131,099 Ops/sec
Number (with integer)	2,328,694 Ops/sec
Number (with string integer)	2,218,740 Ops/sec
parseInt (with integer)	2,207,072 Ops/sec
parseInt (with string integer)	2,158,609 Ops/sec
Unary + (with string float)	2,054,027 Ops/sec
parseInt (with string float)	1,749,146 Ops/sec
Number (with string float)	1,580,852 Ops/sec

Test name

Executions per second

✓ Unary + (with NaN)

1,040,272,320 Ops/sec

Number (with NaN)

7,102,502 Ops/sec

parseInt (with NaN)

7,018,574 Ops/sec

Unary + (with float)

6,534,966 Ops/sec

Number (with float)

3,431,767 Ops/sec

Unary + (with integer)

3,402,229 Ops/sec

Unary + (with string integer)

3,237,634 Ops/sec

parseInt (with float)

3,131,099 Ops/sec

Number (with integer)

2,328,694 Ops/sec

Number (with string integer)

2,218,740 Ops/sec

parseInt (with integer)

2,207,072 Ops/sec

parseInt (with string integer)

2,158,609 Ops/sec

Unary + (with string float)

2,054,027 Ops/sec

parseInt (with string float)

1,749,146 Ops/sec

Number (with string float)

1,580,852 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);