Run results for: Number constructor vs unary plus vs parseInt

Test name	Executions per second
✓ Unary + (with NaN)	171,185,408 Ops/sec
Number (with NaN)	12,105,302 Ops/sec
parseInt (with NaN)	11,980,994 Ops/sec
Unary + (with float)	10,809,483 Ops/sec
Number (with float)	5,708,926 Ops/sec
Unary + (with integer)	5,633,438 Ops/sec
parseInt (with float)	5,516,094 Ops/sec
Unary + (with string integer)	5,495,844 Ops/sec
Number (with integer)	4,012,650 Ops/sec
Number (with string integer)	3,877,907 Ops/sec
parseInt (with integer)	3,848,774 Ops/sec
parseInt (with string integer)	3,774,478 Ops/sec
Unary + (with string float)	2,833,619 Ops/sec
parseInt (with string float)	2,676,208 Ops/sec
Number (with string float)	2,217,624 Ops/sec

Test name

Executions per second

✓ Unary + (with NaN)

171,185,408 Ops/sec

Number (with NaN)

12,105,302 Ops/sec

parseInt (with NaN)

11,980,994 Ops/sec

Unary + (with float)

10,809,483 Ops/sec

Number (with float)

5,708,926 Ops/sec

Unary + (with integer)

5,633,438 Ops/sec

parseInt (with float)

5,516,094 Ops/sec

Unary + (with string integer)

5,495,844 Ops/sec

Number (with integer)

4,012,650 Ops/sec

Number (with string integer)

3,877,907 Ops/sec

parseInt (with integer)

3,848,774 Ops/sec

parseInt (with string integer)

3,774,478 Ops/sec

Unary + (with string float)

2,833,619 Ops/sec

parseInt (with string float)

2,676,208 Ops/sec

Number (with string float)

2,217,624 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);