Run results for: Number constructor vs unary plus vs parseInt

Run details:

User agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:98.0) Gecko/20100101 Firefox/98.0

Browser: Firefox 98

Operating system: Ubuntu

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
Number (with string integer)	15702560.0 Ops/sec
Unary + (with string integer)	31851690.0 Ops/sec
parseInt (with string integer)	17834630.0 Ops/sec
Number (with string float)	2368161.0 Ops/sec
Unary + (with string float)	2459959.0 Ops/sec
parseInt (with string float)	4456438.0 Ops/sec
Number (with integer)	47454170.0 Ops/sec
Unary + (with integer)	1185195000.0 Ops/sec
parseInt (with integer)	47792300.0 Ops/sec
Number (with float)	51047090.0 Ops/sec
Unary + (with float)	1617298000.0 Ops/sec
parseInt (with float)	42157980.0 Ops/sec
Number (with NaN)	25356770.0 Ops/sec
Unary + (with NaN)	1554607000.0 Ops/sec
parseInt (with NaN)	38820460.0 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);