Run results for: Number constructor vs unary plus vs parseInt

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/128.0.0.0 Safari/537.36

Browser: Chrome 128

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
✓ Unary + (with NaN)	244,717,888 Ops/sec
Number (with NaN)	20,129,788 Ops/sec
parseInt (with NaN)	20,048,450 Ops/sec
Unary + (with float)	18,750,108 Ops/sec
Unary + (with integer)	10,128,567 Ops/sec
Number (with float)	10,101,317 Ops/sec
parseInt (with float)	9,872,110 Ops/sec
Unary + (with string integer)	9,667,126 Ops/sec
Number (with integer)	6,921,190 Ops/sec
parseInt (with integer)	6,820,458 Ops/sec
parseInt (with string integer)	6,720,947 Ops/sec
Number (with string integer)	6,643,104 Ops/sec
Unary + (with string float)	5,637,646 Ops/sec
parseInt (with string float)	5,142,293 Ops/sec
Number (with string float)	4,479,214 Ops/sec

Test name

Executions per second

✓ Unary + (with NaN)

244,717,888 Ops/sec

Number (with NaN)

20,129,788 Ops/sec

parseInt (with NaN)

20,048,450 Ops/sec

Unary + (with float)

18,750,108 Ops/sec

Unary + (with integer)

10,128,567 Ops/sec

Number (with float)

10,101,317 Ops/sec

parseInt (with float)

9,872,110 Ops/sec

Unary + (with string integer)

9,667,126 Ops/sec

Number (with integer)

6,921,190 Ops/sec

parseInt (with integer)

6,820,458 Ops/sec

parseInt (with string integer)

6,720,947 Ops/sec

Number (with string integer)

6,643,104 Ops/sec

Unary + (with string float)

5,637,646 Ops/sec

parseInt (with string float)

5,142,293 Ops/sec

Number (with string float)

4,479,214 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);