MACROMEDIA FLEX, Reference

Page: 413 / 830

String.lastIndexOf() 413
index = searchString.indexOf("i", 7);
trace(index); // output: 19
index = searchString.indexOf("z");
trace(index); // output: -1
See also
String.lastIndexOf()
String.lastIndexOf()
Availability
Flash Player 5.
Usage
my_str .lastIndexOf( substring:String , [ startIndex:Number ]) : Number
Parameters
substring
String; the string for which to search.
startIndex
Number; an optional integer specifying the starting point from which to search for
substring
.
Returns
A number; the position of the last occurrence of the specified substring or -1.
Description
Method; searches the string from right to left and returns the index of the last occurrence of
substring
found before
startIndex
within the calling string. This index is zero-based, meaning
that the first character in a string is considered to be at index 0—not index 1. If
substring
is not
found, the method returns -1.
Example
The following example shows how to use
lastIndexOf()
to return the index of a certain
character:
var searchString:String = "Lorem ipsum dolor sit amet.";
var index:Number;
index = searchString.lastIndexOf("L");
trace(index); // output: 0
index = searchString.lastIndexOf("l");
trace(index); // output: 14
index = searchString.lastIndexOf("i");
trace(index); // output: 19
index = searchString.lastIndexOf("ipsum");
trace(index); // output: 6