N-R > parseInt |  |

parseInt

parseint, parse integer

Availability

Flash Player 5.

Usage

    parseInt(expression, [radix])

Parameters

`expression` A string to convert to a integer.

`radix` An integer representing the radix (base) of the number to parse. Legal values are from 2-36. This parameter is optional.

Returns

A number or `NaN`.

Description

Function; converts a string to an integer. If the specified string in the parameters cannot be converted to a number, the function returns `NaN`. Integers beginning with 0 or specifying a radix of 8 are interpreted as octal numbers. Strings beginning with 0x are interpreted as hexadecimal numbers. White space preceding valid integers is ignored, as are trailing nonnumeric characters.

Example

The following examples use the `parseInt` function to evaluate various types of numbers.

`parseInt("3.5")`

    // returns 3.5

    parseInt("bar")
    // returns NaN

    parseInt("4foo")
    // returns 4

The following are examples of hexadecimal conversions:

    parseInt("0x3F8")
    // returns 1016

    parseInt("3E8", 16)
    // returns 1000

The following are examples of a binary conversion:

`parseInt("1010", 2)`

    // returns 10 (the decimal representation of the binary 1010)

The following is an example of octal number parsing (in this case the octal number is identified by the radix, 8):

`parseInt("777", 8)`

    // returns 511 (the decimal representation of the octal 777)