<?xml version="1.0" encoding="utf-8"?>
<!-- http://blog.flexexamples.com/2007/09/08/checking-if-a-character-is-whitespace-using-the-flex-stringutil-classs-iswhitespace-method/ -->
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
		layout="vertical"
		verticalAlign="middle"
		backgroundColor="white" viewSourceURL="srcview/index.html">

	<mx:Script>
		<![CDATA[
			import mx.controls.dataGridClasses.DataGridColumn;
			import mx.utils.StringUtil;

			private function isWhitespace_labelFunc(item:Object, column:DataGridColumn):String {
				var char:String = item.toString();
				return StringUtil.isWhitespace(char).toString();
			}

			private function isWhitespace_RegExp_labelFunc(item:Object, column:DataGridColumn):String {
				var char:String = item.toString();
				var re:RegExp = /^[[:space:]]$/;
				return re.test(char).toString();
			}

			private function charCodeAt_labelFunc(item:Object, column:DataGridColumn):String {
				var char:String = item.toString();
				return item.charCodeAt(0).toString();
			}
		]]>
	</mx:Script>

	<mx:String id="str">The quick	brown
	fox jumped		over the    lazy dog.</mx:String>

	<mx:ArrayCollection id="arrColl" source="{str.split('')}" />

	<mx:ApplicationControlBar dock="true">
		<mx:Text text="{str}" selectable="false" />
	</mx:ApplicationControlBar>

	<mx:DataGrid id="dataGrid"
			dataProvider="{arrColl}"
			width="100%"
			height="100%">
		<mx:columns>
			<mx:DataGridColumn dataTipField="lbl"
					headerText="Character" />
			<mx:DataGridColumn labelFunction="isWhitespace_labelFunc"
					headerText="isWhitespace(char)" />
			<mx:DataGridColumn labelFunction="isWhitespace_RegExp_labelFunc"
					headerText="[[:space:]]" />
			<mx:DataGridColumn labelFunction="charCodeAt_labelFunc"
					headerText="charCodeAt()" />
		</mx:columns>
	</mx:DataGrid>

</mx:Application>