Javascript - Number class Reference


JavaScript Number class has helper methods for number processing.


Number constructor PropertyIn JavaScript, the constructor property returns the constructor function for an object.
Number MAX_VALUE PropertyThe MAX_VALUE property returns the largest number possible in JavaScript.
Number MIN_VALUE PropertyThe MIN_VALUE property returns the smallest positive number possible in JavaScript.
Number NEGATIVE_INFINITY PropertyThe NEGATIVE_INFINITY property represents negative infinity.
Number NaN PropertyThe NaN property represents "Not-a-Number" value. This property indicates that a value is not a legal number.
Number POSITIVE_INFINITY PropertyThe POSITIVE_INFINITY property represents positive infinity.
Number prototype PropertyThe prototype constructor can add new properties and methods to JavaScript Number class.


Number isFinite() MethodThe Number.isFinite() method returns whether a value is a finite number.
Number isInteger() MethodThe Number.isInteger() method determines whether a value an integer.
Number isNaN() MethodThe Number.isNaN() method determines whether a value is NaN (Not-A-Number).
Number isSafeInteger() MethodThe Number.isSafeInteger() method determines whether a value is a safe integer.
Number toExponential() MethodThe toExponential() method converts a number into an exponential notation.
Number toFixed() MethodThe toFixed() method converts a number into a string keeping a specified number of decimals.
Number toPrecision() MethodThe toPrecision() method formats a number to a specified length.
Number toString() MethodThe toString() method converts a number to a string.
Number valueOf() MethodThe valueOf() method returns the primitive value of a number.