IEnumerable.contains Method

Checks if the given element is present in the collection.

Namespace: MindFusion.Mapping
Package: IEnumerable.js

 Syntax

JavaScript

function contains (item)

 Parameters

item

Object. The object to check for.

 Return Value

Boolean. True if the element is found, otherwise false.

 Example

The following code creates new Marker-s and add them to the decorations collection of a DecorationLayer called markers. Then it checks if an item is contained within the collection and if yes - removes it. The decorations property is of type ObservableCollection, which derives from IEnumerable.

JavaScript

var m = MindFusion.Mapping;var markers = new m.DecorationLayer("Images");// create some markers with images
var mark = new m.Marker(new m.LatLong(-22.951916, -43.210487));
mark.imageSrc = "./images/christ_redeemer.png";
mark.text = "Christ the Redeemer";
markers.decorations.add(mark);var mark1 = new m.Marker();
mark1.location = new m.LatLong(41.89021, 12.492231);
mark1.imageSrc = "./images/colosseum100.png";
mark1.text = "Colloseum";
markers.decorations.add(mark1);
...........................if(markers.decorations.contains(mark))
 markers.decorations.remove(mark);