FLASH® LITE™ 2.x - Adobe Help and Support

substr (String.substr method)
public substr(start:Number, length:Number) : String
Returns the characters in a string from the index specified in the start parameter through the
number of characters specified in the length parameter. The substr method does not change
the string specified by my_str; it returns a new string.
Parameters
start:Number - An integer that indicates the position of the first character in my_str to be
used to create the substring. If start is a negative number, the starting position is determined
from the end of the string, where the -1 is the last character.
length:Number - The number of characters in the substring being created. If length is not
specified, the substring includes all the characters from the start to the end of the string.
Returns
String - A substring of the specified string.
Example
The following example creates a new string, my_str and uses substr() to return the second
word in the string; first, using a positive start parameter, and then using a negative start
parameter:
var my_str:String = new String("Hello world");
var mySubstring:String = new String();
mySubstring = my_str.substr(6,5);
trace(mySubstring); // output: world
mySubstring = my_str.substr(-5,5);
trace(mySubstring); // output: world
An example is also in the Strings.fla file in the ActionScript samples folder at
www.adobe.com/go/learn_fl_samples. Download and decompress the .zip file and navigate to
the folder for your version of ActionScript to access the sample.
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.
602 ActionScript classes