Run results for: Numver.isInteger vs raw

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/79.0.3945.130 Safari/537.36

Browser: Chrome 79

Operating system: Linux

Device Platform: Desktop

Date tested: 5 years ago

Test name	Executions per second
Number.isInteger	1823173.0 Ops/sec
floor	1758904.8 Ops/sec
toFixed	921060.8 Ops/sec
^ 0	2730277.5 Ops/sec

Script Preparation code:

var float = 23.677898776;
var integer = 23;

var floor = Math.floor;
var isint = Number.isInteger; 

function one(value) {
	return isint(value);
}

function two(value) {
	return value === floor(value);
}

function three(value) {
	return value === +value.toFixed(0);
}

function four(value) {
	return value === (value ^ 0);
}

Tests:

Number.isInteger
if (one(float)) throw new Error(`float can't be an integer`); if (!one(integer)) throw new Error(`integer can't be a float`);
floor
if (two(float)) throw new Error(`float can't be an integer`); if (!two(integer)) throw new Error(`integer can't be a float`);
toFixed
if (three(float)) throw new Error(`float can't be an integer`); if (!three(integer)) throw new Error(`integer can't be a float`);
^ 0
if (four(float)) throw new Error(`float can't be an integer`); if (!four(integer)) throw new Error(`integer can't be a float`);