Run results for: Number Conversion Speed

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/101.0.4951.64 Safari/537.36

Browser: Chrome 101

Operating system: Linux

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
unary	2027073.9 Ops/sec
number	651565.9 Ops/sec
numberNum	699605.9 Ops/sec
int	505600.0 Ops/sec
intNum	532053.6 Ops/sec
float	556496.6 Ops/sec
floatNum	559483.6 Ops/sec
nanNull	936585.4 Ops/sec

Script Preparation code:

var mb1 = 'abc';
var mb2 = '123';

var unary = (a) => {
  try {
    +a;
    return true;
  } catch {
    return false;
  }
};
var number = (a) => !isNaN(Number(a));
var numberNum = (a) => !Number.isNaN(Number(a));
var float = (a) => !isNaN(parseFloat(a));
var floatNum = (a) => !Number.isNaN(parseFloat(a));
var int = (a) => !isNaN(parseInt(a));
var intNum = (a) => !Number.isNaN(parseInt(a));
var nanNull = (a) => a !== null && !isNaN(a);

Tests:

unary
unary(mb1); unary(mb2);
number
number(mb1); number(mb2);
numberNum
numberNum(mb1); numberNum(mb2);
int
int(mb1); int(mb2);
intNum
intNum(mb1); intNum(mb2);
float
float(mb1); float(mb2);
floatNum
floatNum(mb1); floatNum(mb2);
nanNull
nanNull(mb1); nanNull(mb2);