Comparing equality of two numbers using JavaScript Number() function
new Number()
will returnobject
notNumber
and you can not compare objects like this.alert({}==={});
will returnfalse
too.
Remove new
as you do not need to create new instance of Number
to compare values.
Try this:
var fn = 20;
var sn = 20;
alert(Number(fn) === Number(sn));
If you are using floating numbers and if they are computed ones. Below will be a slightly more reliable way.
console.log(Number(0.1 + 0.2) == Number(0.3)); // This will return false.
To reliably/almost reliably do this you can use something like this.
const areTheNumbersAlmostEqual = (num1, num2) => {
return Math.abs( num1 - num2 ) < Number.EPSILON;
}
console.log(areTheNumbersAlmostEqual(0.1 + 0.2, 0.3));