JavaScript has only one type of number.
Numbers can be written with, or without, decimals:
Extra large or extra small numbers can be written with scientific (exponent) notation:
For a tutorial about JavaScript numbers, read our JavaScript Number Tutorial.
Property | Description |
---|---|
constructor | Returns the function that created JavaScript's Number prototype |
MAX_VALUE | Returns the largest number possible in JavaScript |
MIN_VALUE | Returns the smallest number possible in JavaScript |
NEGATIVE_INFINITY | Represents negative infinity (returned on overflow) |
NaN | Represents a "Not-a-Number" value |
POSITIVE_INFINITY | Represents infinity (returned on overflow) |
prototype | Allows you to add properties and methods to an object |
Method | Description |
---|---|
toExponential(x) | Converts a number into an exponential notation |
toFixed(x) | Formats a number with x numbers of digits after the decimal point |
toPrecision(x) | Formats a number to x length |
toString() | Converts a number to a string |
valueOf() | Returns the primitive value of a number |