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)	162,912,544 Ops/sec
parseInt (with NaN)	15,183,397 Ops/sec
Number (with NaN)	15,174,115 Ops/sec
Unary + (with float)	14,144,916 Ops/sec
Unary + (with integer)	7,600,633 Ops/sec
Number (with float)	7,575,813 Ops/sec
parseInt (with float)	7,426,184 Ops/sec
Unary + (with string integer)	6,580,640 Ops/sec
Number (with integer)	5,201,866 Ops/sec
parseInt (with integer)	5,148,097 Ops/sec
Number (with string integer)	4,982,106 Ops/sec
parseInt (with string integer)	4,575,618 Ops/sec
Unary + (with string float)	4,026,022 Ops/sec
parseInt (with string float)	4,008,842 Ops/sec
Number (with string float)	2,339,051 Ops/sec

Test name

Executions per second

✓ Unary + (with NaN)

162,912,544 Ops/sec

parseInt (with NaN)

15,183,397 Ops/sec

Number (with NaN)

15,174,115 Ops/sec

Unary + (with float)

14,144,916 Ops/sec

Unary + (with integer)

7,600,633 Ops/sec

Number (with float)

7,575,813 Ops/sec

parseInt (with float)

7,426,184 Ops/sec

Unary + (with string integer)

6,580,640 Ops/sec

Number (with integer)

5,201,866 Ops/sec

parseInt (with integer)

5,148,097 Ops/sec

Number (with string integer)

4,982,106 Ops/sec

parseInt (with string integer)

4,575,618 Ops/sec

Unary + (with string float)

4,026,022 Ops/sec

parseInt (with string float)

4,008,842 Ops/sec

Number (with string float)

2,339,051 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);