Run results for: Number constructor vs unary plus vs parseInt

Run details:

User agent: Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Mobile Safari/537.36

Browser: Chrome Mobile 120

Operating system: Android

Device Platform: Mobile

Date tested: 10 months ago

Test name	Executions per second
Number (with string integer)	1982554.0 Ops/sec
Unary + (with string integer)	2854920.0 Ops/sec
parseInt (with string integer)	1994036.0 Ops/sec
Number (with string float)	1169534.0 Ops/sec
Unary + (with string float)	1496224.0 Ops/sec
parseInt (with string float)	1347984.0 Ops/sec
Number (with integer)	2078077.0 Ops/sec
Unary + (with integer)	3103227.0 Ops/sec
parseInt (with integer)	2079005.0 Ops/sec
Number (with float)	3033405.0 Ops/sec
Unary + (with float)	5933990.0 Ops/sec
parseInt (with float)	3035085.0 Ops/sec
Number (with NaN)	6205412.0 Ops/sec
Unary + (with NaN)	782283700.0 Ops/sec
parseInt (with NaN)	6071031.0 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);