# Question about ComboBox Components

**URL:** <https://forum.kirupa.com/t/question-about-combobox-components/328480>\
**Category:** flash\
**Created:** [May 20, 2012, 2:43pm UTC](https://forum.kirupa.com/t/question-about-combobox-components/328480 "2012-05-20T14:43:31Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![joenowhere](https://avatars.discourse-cdn.com/v4/letter/j/8dc957/32.png) [@joenowhere](https://forum.kirupa.com/u/joenowhere)\
**Post date:** [May 20, 2012, 2:43pm UTC](https://forum.kirupa.com/t/question-about-combobox-components/328480/1 "2012-05-20T14:43:31Z")

</div>

I’m using two ComboBox to let user to choose two numbers, after that, they just press GO and will see the answer.

My question is “Can I get the answer directly after user choose their numbers from the ComboBox and no need to pressing the go button?”

Below are the code I use and I attach my SWF file! Please help and Thanks a lot!

```auto
import flash.events.Event;

//Uncomment the following line if create runtime ComboBox
//import fl.controls.ComboBox;

//Add Items to ComboBox
box1Combo.prompt = "Please select a number";
box1Combo.addItem( {label: "1" } );
box1Combo.addItem( {label: "2" } );
box1Combo.addItem( {label: "3" } );
box1Combo.addItem( {label: "4" } );
box1Combo.addItem( {label: "5" } );

//Add CHANGE event listener to ComboBox
//Whenever the index of Combox CHANGE, function fruitSelect will be called
box1Combo.addEventListener(Event.CHANGE, numberSelect1);

function numberSelect1(event:Event){
	//Display the Index of ComboBox
//	ComboIndex_txt.text = event.target.selectedIndex;
	
	//Display the Label of ComboBox
	ComboLabel_txt1.text = event.target.value;
}

//Uncomment the following line if create runtime ComboBox
//import fl.controls.ComboBox;

//Add Items to ComboBox
box2Combo.prompt = "Please select a number";
box2Combo.addItem( {label: "1" } );
box2Combo.addItem( {label: "2" } );
box2Combo.addItem( {label: "3" } );
box2Combo.addItem( {label: "4" } );
box2Combo.addItem( {label: "5" } );

//Add CHANGE event listener to ComboBox
//Whenever the index of Combox CHANGE, function fruitSelect will be called
box2Combo.addEventListener(Event.CHANGE, numberSelect2);

function numberSelect2(event:Event){
	//Display the Index of ComboBox
//	ComboIndex_txt.text = event.target.selectedIndex;
	
	//Display the Label of ComboBox
	ComboLabel_txt2.text = event.target.value;
}

go_btn1.addEventListener(MouseEvent.CLICK, answer1);
// This will set the compiler
// waiting for a mouse click
// on our button

function answer1 (event:Event):void 
{
	// Let's find out what is on our screen!
	var number1:Number = Number(ComboLabel_txt1.text);
	// This will find out what is on the Amount Box
	// and convert it to a value
	
	var number2:Number= Number(ComboLabel_txt2.text);
	// Since we are looking for a percentage
	// we are dividing the value by 100
	
	var answer1:Number = number1+ number2;
	
	// Now let's put the result
	// in the Dynamic Text Box
	// The Value has to become a string
	
	Total_txt1.text = String(answer1);
	
	//Thanks for Watching!!
}

```