User Guide

1138 ActionScript classes
An example is also in the Strings.fla file in the ActionScript samples folder. The following list
gives typical paths to this folder:
■ Windows: boot drive\Program Files\Macromedia\Flash 8\Samples and
Tutorials\Samples\ActionScript
■ Macintosh: Macintosh HD/Applications/Macromedia Flash 8/Samples and Tutorials/
Samples/ActionScript
substring (String.substring method)
public substring(start:Number, end:Number) : String
Returns a string comprising the characters between the points specified by the start and end
parameters. If the
end parameter is not specified, the end of the substring is the end of the
string. If the value of
start equals the value of end, the method returns an empty string. If
the value of
start is greater than the value of end, the parameters are automatically swapped
before the function executes and the original value is unchanged.
Availability: ActionScript 1.0; Flash Player 5
Parameters
start:Number - An integer that indicates the position of the first character of my_str used to
create the substring. Valid values for
start are 0 through String.length - 1. If start is a
negative value, 0 is used.
end:Number - An integer that is 1+ the index of the last character in my_str to be extracted.
Valid values for
end are 1 through String.length. The character indexed by the end
parameter is not included in the extracted string. If this parameter is omitted,
String.length
is used. If this parameter is a negative value, 0 is used.
Returns
String - A substring of the specified string.
Example
The following example shows how to use
substring():
var my_str:String = "Hello world";
var mySubstring:String = my_str.substring(6,11);
trace(mySubstring); // output: world