Functions of array indexof In Flex

Functions of array indexof In Flex

1. Description

Indexof is used to search for indexes from small to large. If the index value is queried,-1 is returned if the index value is not found;

2. Instance

(1) design source code

<? XML version = "1.0" encoding = "UTF-8"?> <S: Application xmlns: FX = "http://ns.adobe.com/mxml/2009" xmlns: S = "Library: // ns.adobe.com/flex/spark" xmlns: MX = "Library: // ns.adobe.com/flex/mx "width =" 100% "Height =" 100% "creationcomplete =" creationhandler (event) "> <s: layout> <s: basiclayout/> </s: layout> <FX: SCRIPT> <! [CDATA [import MX. events. flexevent;/*** initialization function * indexof is used to search for indexes from small to large. * if it is obtained, the index value is returned, -1 */protected function creationhandler (Event: flexevent): void {var array: array = ["Peach Tree", "Pear Tree", "Pine Tree ", "camphor tree"]; If (array. indexof ("Lishu ")! =-1) {trace ("query by index from small to large:" + array. indexof ("Lishu");} If (array. indexof ("camphor tree", 3 )! =-1) {trace ("starting from the third element, querying by index from small to large:" + array. indexof ("camphor tree", 3) ;}]]> </FX: SCRIPT> <FX: declarations> <! -- Place non-visual elements (such as services and value objects) Here --> </FX: declarations> </S: Application>

(2) execution result

Query by index from small to large: 1
Starting from the third element, query by index from small to large: 3

Functions of array indexof In Flex