JavaScript Infinity Property

　Attributs globaux JavaScript/Fonction

GlobalInfinityThe property is a numerical value representing infinity.

Infinity represents the numerical value of positive infinity.

-Infinity represents the numerical value of negative infinity.

When the number exceeds the upper limit of floating-point numbers (that is1.797693134862315E + 308）it will display Infinity.

When the number exceeds the lower limit of floating-point numbers, that is-1.797693134862316E + 308When, it will display-Infinity.

The initial value of Infinity isNumber.POSITIVE_INFINITY.

Syntax :

Infinity

var x = document.getElementById('result');
x.innerHTML = Infinity;　　　//　Infinity
x.innerHTML = Math.pow(10,　1000);　//　Infinity
x.innerHTML =　1.7976931348623157E+10308;　　//　Infinity
x.innerHTML =　-1.7976931348623157E+10308;　//　Negative Infinity

Compatibilité navigateur

Tous les navigateurs prennent en charge intégralement la propriété Infinity :

Détails techniques

Plus d'exemples

Vérifiez si maxNumber est infini :

var maxNumber = Math.pow(10,　1000);　//　Nombre maximum
if (maxNumber === Infinity) {
　　　document.getElementById('result').innerHTML = "Nous le nommons infini!";
}

　Attributs globaux JavaScript/Fonction