Run results for: Number constructor vs unary plus vs parseInt

Test name	Executions per second
✓ Unary + (with NaN)	115,805,384 Ops/sec
parseInt (with NaN)	11,301,867 Ops/sec
Number (with NaN)	11,171,146 Ops/sec
Unary + (with float)	10,376,790 Ops/sec
Unary + (with integer)	5,831,906 Ops/sec
Number (with float)	5,604,960 Ops/sec
parseInt (with float)	5,385,102 Ops/sec
Unary + (with string integer)	5,145,685 Ops/sec
Number (with integer)	3,973,419 Ops/sec
parseInt (with integer)	3,754,735 Ops/sec
Number (with string integer)	3,664,614 Ops/sec
parseInt (with string integer)	3,642,762 Ops/sec
Unary + (with string float)	3,126,319 Ops/sec
parseInt (with string float)	2,549,427 Ops/sec
Number (with string float)	2,474,588 Ops/sec

Test name

Executions per second

✓ Unary + (with NaN)

115,805,384 Ops/sec

parseInt (with NaN)

11,301,867 Ops/sec

Number (with NaN)

11,171,146 Ops/sec

Unary + (with float)

10,376,790 Ops/sec

Unary + (with integer)

5,831,906 Ops/sec

Number (with float)

5,604,960 Ops/sec

parseInt (with float)

5,385,102 Ops/sec

Unary + (with string integer)

5,145,685 Ops/sec

Number (with integer)

3,973,419 Ops/sec

parseInt (with integer)

3,754,735 Ops/sec

Number (with string integer)

3,664,614 Ops/sec

parseInt (with string integer)

3,642,762 Ops/sec

Unary + (with string float)

3,126,319 Ops/sec

parseInt (with string float)

2,549,427 Ops/sec

Number (with string float)

2,474,588 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);