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NotifyCollectionChangedEventArgs.index Property
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MindFusion.Common
Control Class
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NotifyCollectionChangedAction Class
NotifyCollectionChangedEventArgs Class
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NotifyCollectionChangedEventArgs Constructor
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action Property
index Property
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oldItems Property
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Gets the index where the change occurred.

Namespace: MindFusion.Common
Assembly: Events.js

## Syntax

JavaScript Copy Code
get index() {}

### Property Value

Number. The index.

## Example

The following code handles the collectionChanged event of the decorations property of a DecorationLayer object in a map.

JavaScript Copy Code
var m = MindFusion.Mapping; var markers = new m.DecorationLayer("Images"); ................... //add some Marker-s to the decorations property ...................... markers.decorations.collectionChanged.addEventListener(handleCollectionChanged); function (handleCollectionChanged) (sender, args ) { //the change has occurred on the first element if(args.index === 0) { //do something } }

## See Also

NotifyCollectionChangedEventArgs Members
NotifyCollectionChangedEventArgs Class
MindFusion.Common Namespace