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/133.0.0.0 Safari/537.36 Edg/133.0.0.0

Browser: Chrome 133

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
✓ Number (with NaN)	144,508,320 Ops/sec
parseInt (with NaN)	137,669,792 Ops/sec
Unary + (with NaN)	137,452,464 Ops/sec
Number (with float)	95,672,576 Ops/sec
Number (with integer)	93,531,064 Ops/sec
Unary + (with float)	93,497,696 Ops/sec
Unary + (with integer)	92,357,552 Ops/sec
parseInt (with float)	70,405,984 Ops/sec
parseInt (with integer)	70,377,416 Ops/sec
Number (with string integer)	57,876,340 Ops/sec
parseInt (with string integer)	57,659,588 Ops/sec
Unary + (with string integer)	56,614,180 Ops/sec
parseInt (with string float)	8,956,869 Ops/sec
Unary + (with string float)	8,521,725 Ops/sec
Number (with string float)	8,329,798 Ops/sec

Test name

Executions per second

✓ Number (with NaN)

144,508,320 Ops/sec

parseInt (with NaN)

137,669,792 Ops/sec

Unary + (with NaN)

137,452,464 Ops/sec

Number (with float)

95,672,576 Ops/sec

Number (with integer)

93,531,064 Ops/sec

Unary + (with float)

93,497,696 Ops/sec

Unary + (with integer)

92,357,552 Ops/sec

parseInt (with float)

70,405,984 Ops/sec

parseInt (with integer)

70,377,416 Ops/sec

Number (with string integer)

57,876,340 Ops/sec

parseInt (with string integer)

57,659,588 Ops/sec

Unary + (with string integer)

56,614,180 Ops/sec

parseInt (with string float)

8,956,869 Ops/sec

Unary + (with string float)

8,521,725 Ops/sec

Number (with string float)

8,329,798 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);