Run results for: Number constructor vs unary plus vs parseInt

Run details:

User agent: Mozilla/5.0 (Linux; Android 9; Redmi 6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.58 Mobile Safari/537.36

Browser: Chrome Mobile 99

Operating system: Android

Device Platform: Mobile

Date tested: 2 years ago

Test name	Executions per second
Number (with string integer)	265365.1 Ops/sec
Unary + (with string integer)	391074.4 Ops/sec
parseInt (with string integer)	270508.1 Ops/sec
Number (with string float)	191994.2 Ops/sec
Unary + (with string float)	235044.8 Ops/sec
parseInt (with string float)	204368.0 Ops/sec
Number (with integer)	284989.8 Ops/sec
Unary + (with integer)	420590.4 Ops/sec
parseInt (with integer)	268554.6 Ops/sec
Number (with float)	423236.8 Ops/sec
Unary + (with float)	848751.8 Ops/sec
parseInt (with float)	415400.5 Ops/sec
Number (with NaN)	919157.2 Ops/sec
Unary + (with NaN)	190644832.0 Ops/sec
parseInt (with NaN)	657450.9 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);