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JavaScript Constants

JavaScript - Internet Explorer 10

The following table lists predefined JavaScript constants that you can use in expressions.

Constant	Description	JavaScript object
E	The mathematical constant e. This is Euler's number, the base of natural logarithms.	Math
Infinity	A value that is larger than the largest floating point number. Negative Infinity (-Infinity) is smaller than the smallest floating point number.	Global
LN2	The natural logarithm of 2.	Math
LN10	The natural logarithm of 10.	Math
LOG2E	The base-2 logarithm of e.	Math
LOG10E	The base-10 logarithm of e.	Math
MAX_VALUE	The largest number that can be represented in JavaScript.	Number
MIN_VALUE	The closest number to zero that can be represented in JavaScript.	Number
NaN	Indicates that an arithmetic expression returned a value that is not a number.	Number
NaN (Global)	A value that indicates that an expression is not a number.	Global
NEGATIVE_INFINITY	A value that is smaller than the smallest floating point number.	Number
null Constant (JavaScript)	The value of a variable that does not point to valid data.	Global
PI	Pi. This is the ratio of the circumference of a circle to its diameter.	Math
POSITIVE_INFINITY	A value that is larger than the largest floating point number.	Number
SQRT1_2	The square root of 0.5, or, equivalently, one divided by the square root of 2.	Math
SQRT2	The square root of 2.	Math
undefined	The value of a variable that has been declared but not initialized.	Global

Global Object (JavaScript)

Math Object (JavaScript)

Number Object (JavaScript)

JavaScript Reference

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