Name
String.lastIndexOf( ) Method — find the last occurrence of a substring in a string
Availability
Flash 5
Synopsis
string.lastIndexOf(substring) string.lastIndexOf(substring, startIndex)
Arguments
- substring
A string containing the character or characters to search for.
- startIndex
An optional integer position in
string
at which to start the search forsubstring
. Thestring
is searched backward fromstartIndex
, which should be in the range 0 (the first character) tostring
.length-1
(the last character). Defaults tostring
.length-1
.
Returns
The position of the last occurrence of
substring
in
string
prior to
startIndex
. Returns -1 if
substring
is not found prior to
startIndex
in
string
.
Description
The lastIndexOf( )
method is used to search for
the last occurrence of a substring in a string or to check whether a
string contains a certain substring.
Example
URL = "http://www.moock.org/webdesign/flash/fillthewindow.html"; // Finds the last slash character lastSlash = URL.lastIndexOf("/"); // Extracts the filename from the URL file = URL.substring(lastSlash + 1); trace(file); // Displays: fillthewindow.html
See Also
String.charAt( )
, String.indexOf(
)
; Section 4.6.5.4 in Chapter 4
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