The Javascript Number.POSITIVE_INFINITY property stores the positive Infinity value.
In the following example, the variable bigNumber is assigned a value that is larger than the maximum value.
var bigNumber = Number.MAX_VALUE * 2; if (bigNumber == Number.POSITIVE_INFINITY) { console.log("is "+ Number.POSITIVE_INFINITY); }else{ console.log("is not "+ Number.POSITIVE_INFINITY); }