MACROMEDIA FLEX-FLEX ACTIONSCRIPT LANGUAGE Reference page 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
String; the string for which to search.
substring
Number; an optional integer specifying the starting point from which to search for
startIndex
.
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
found before
substring
that the first character in a string is considered to be at index 0—not index 1. If
found, the method returns -1.
Example
The following example shows how to use
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
within the calling string. This index is zero-based, meaning
startIndex
lastIndexOf()
substring
to return the index of a certain
String.lastIndexOf()
is not
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