JavaScript Core Reference - Beginning JavaScript - page 675

Properties

property introduced description

JavaScript 1.1 Used to reference the constructor function for the

object.

constructor

JavaScript 1.1 Returns the largest number that can be

represented in JavaScript (approximately
1.79E+308).

MAX_VALUE

JavaScript 1.1 Returns the smallest number that can be

represented in JavaScript (5E-324).

MIN_VALUE

JavaScript 1.1 Returns a value that is “not a number.”

NaN

JavaScript 1.1 Returns a value representing negative infinity.

NEGATIVE_INFINITY

JavaScript 1.1 Returns a value representing (positive) infinity.

POSITIVE_INFINITY

JavaScript 1.1 Returns the prototype for the object, which can be

used to extend the object's interface.

prototype

Methods

Method introduced description

JavaScript 1.5 Returns a string containing the

exponent notation of a number. The
parameter should be between 0 and
20 and determines the number of
digits after the decimal.

toExponential(fractionDigits)

JavaScript 1.5 The format number for digits

number of digits. The number is
rounded up, and 0 s are added after
the decimal point to achieve the
desired decimal length.

toFixed([digits])

JavaScript 1.5 Returns a string representing the

Number object to the specified
precision.

toPrecision([precision])

JavaScript 1.1 Converts the Number object into a

string.

toString()

JavaScript 1.1 Returns the primitive value of the

Number object.

valueOf()