User Guide

1132 ActionScript classes

lastIndexOf (String.lastIndexOf method)

public lastIndexOf(value:String, [startIndex:Number]) : Number

Searches the string from right to left and returns the index of the last occurrence of value

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

value is not found, the

method returns -1.

Availability: ActionScript 1.0; Flash Player 5

Parameters

value:String - The string for which to search.

startIndex:Number [optional] - An integer specifying the starting point from which to

search for

value.

Returns

Number - The position of the last occurrence of the specified substring or -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

index = searchString.lastIndexOf("i", 18);

trace(index); // output: 6

index = searchString.lastIndexOf("z");

trace(index); // output: -1