Change Text format
package { import flash.display.Sprite; import flash.text.TextField; import flash.text.TextFormat; public class Main extends Sprite { public function Main( ) { var field:TextField = new TextField( ); var formatter:TextFormat = new TextFormat( ); formatter.bold = true; // Bold the text formatter.color = 0xFFFF00; // Make the text yellow formatter.blockIndent = 5; // Adjust the margin by 5 points field.setTextFormat(formatter); field.text = "this is sample text"; field.setTextFormat(formatter); // Formatting applied field.text = "this is new text"; // No formatting applied field.setTextFormat(formatter); // Formatting reapplied field.text += "appended text"; // Formatting removed addChild(field); } } }