Using setStyle to programmatically manipulate a style property

           
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
    backgroundColor="0xFFFFFF">
    <mx:Script>
        
        public function changeColor():void
        {
            myTextArea.setStyle("backgroundColor",0xFF0000);
        }
      
    </mx:Script>
    <mx:TextArea text="Text Area" id="myTextArea" />
    <mx:Button click="changeColor()" label="Try Me" />
</mx:Application>

1.	Use setStyle() method, set it inline, or use Cascading Style Sheets (CSS)
2.	Use setStyle to change font size
3.	Use setStyle to change font style
4.	Cast target to a UIComponent before calling the setStyle() method
5.	Use setStyle() method
6.	Using the setStyle() method to apply graphical skins
7.	Using setStyle() method with a trigger
8.	Use the setStyle() method to apply the custom class to the item renderer.
9.	Use getStyle() with effects defined in MXML
10.	Use getStyle() with behaviors defined in MXML
11.	Set a style property inline, and then reads that property with the getStyle() method

Using setStyle to programmatically manipulate a style property : Style Get Set « Style « Flex

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