User Guide

686 Chapter 2: ActionScript Language Reference
parseInt()
Availability
Flash Player 5.
Usage
parseInt(expression:String [, radix:Number]) : Number
Parameters
expression
A string to convert to an integer.
radix An integer representing the radix (base) of the number to parse. Legal values are from 2
to 36. This parameter is optional.
Returns
A number or NaN (not a number).
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. Strings beginning with 0x are interpreted as
hexadecimal numbers. Integers beginning with 0 or specifying a radix of 8 are interpreted as octal
numbers. White space preceding valid integers is ignored, as are trailing nonnumeric characters.
Example
The examples in this section use the parseInt() function to evaluate various types of numbers.
The following example returns 3:
parseInt("3.5")
The following example returns NaN:
parseInt("bar")
The following example returns 4:
parseInt("4foo")
The following example shows a hexadecimal conversion that returns 1016:
parseInt("0x3F8")
The following example shows a hexadecimal conversion using the optional radix parameter that
returns 1000:
parseInt("3E8", 16)
The following example shows a binary conversion and returns 10, which is the decimal
representation of the binary 1010:
parseInt("1010", 2)
CHAPTER 2
ActionScript Language Reference