Just adding 2 numbers.

Question

Adding 2 numbers having 3 textfields and a button, I can do. The first textfield for input one, the second one for input two and the third one for output (result). The button triggering the operation.
recently, some of you helped me with the calculus of the square root. As you can see below:
http://www.er.uqam.ca/nobel/m340201/test/newestcalc.html
My question now, how can I add 2 numbers only with one textfield( result) and 4 buttons. One button for number 1, another one for number 2, another one for the operator +, and finally another one for the sign =.
I have the code, and being new at this I cannot figure out how to put everything to work:
import flash.events.Event;
var txt_inp:TextField = new TextField();
txt_inp.type = "input";
txt_inp.x = 168.95;
txt_inp.y = 51.10;
txt_inp.width = 209;
txt_inp.height = 52.90;
txt_inp.border = true;
txt_inp.borderColor = 0x0000da;
txt_inp.restrict = "0-9.";
var myFormat:TextFormat = new TextFormat();
myFormat.size = 44;//myFormat.align = TextFormatAlign.CENTER;
myFormat.align = TextFormatAlign.JUSTIFY;
txt_inp.defaultTextFormat = myFormat;
txt_inp.textColor = 0x0000FF;
txt_inp.maxChars = 5;
txt_inp.multiline = false;
txt_inp.text = '';
addChild(txt_inp);
var num1:Number;
var num2:Number;
button1.addEventListener(MouseEvent.CLICK, fl_MouseClickHandler);
button2.addEventListener(MouseEvent.CLICK, fl_MouseClickHandler);
function fl_MouseClickHandler(e:MouseEvent):void
txt_inp.appendText(e.currentTarget.name.substr(6));
buttonplus.addEventListener(MouseEvent.CLICK, fl_MouseClickHandler_5);
function fl_MouseClickHandler_5(event:MouseEvent):void
trace("Mouse clicked");
equale.addEventListener(MouseEvent.CLICK, fl_MouseClickHandler_6);
function fl_MouseClickHandler_6(event:MouseEvent):void
trace("Mouse clicked");

Answer 1

Hi
THe code gives me the following:
When I input the number 1, it appears in the textfield, and then I click on +, and then I input number 2  which also appears in the textfield, and when I press on =, I get the result 3. It is a bit confusing because instead of having just the result (3), I get all the numbers in the textfield. which is 123. I should be having only the last number(3).
I tried to sovlve it alone first, but it is a bit too tricky and it took all the day.
NB: May be the code you gave me is the blessing, and all I have to do is add between 1 and 2 the sign +(plus), and between 2 and 3, the sign = (equal). And then it would look like the real thing.
But I don't know how to code them. Is it 187 ?
import flash.events.Event;
var txt_inp:TextField = new TextField();
txt_inp.type = "input";
txt_inp.x = 168.95;
txt_inp.y = 51.10;
txt_inp.width = 209;
txt_inp.height = 52.90;
txt_inp.border = true;
txt_inp.borderColor = 0x0000da;
txt_inp.restrict = "0-9.";
var myFormat:TextFormat = new TextFormat();
myFormat.size = 44;//myFormat.align = TextFormatAlign.CENTER;
myFormat.align = TextFormatAlign.JUSTIFY;
txt_inp.defaultTextFormat = myFormat;
txt_inp.textColor = 0x0000FF;
txt_inp.maxChars = 5;
txt_inp.multiline = false;
txt_inp.text = '';
addChild(txt_inp);
button1.addEventListener(MouseEvent.CLICK, fl_MouseClickHandler);
button2.addEventListener(MouseEvent.CLICK, fl_MouseClickHandler);
function fl_MouseClickHandler(e:MouseEvent):void
txt_inp.appendText(e.currentTarget.name.substr(6));
var num:Number=0;
buttonplus.addEventListener(MouseEvent.CLICK, plusF);
function plusF(event:MouseEvent):void
if(!isNaN(Number(txt_inp.text))){
num = Number(txt_inp.text);
} else {
equale.addEventListener(MouseEvent.CLICK, equalF);
function equalF(event:MouseEvent):void
if(!isNaN(Number(txt_inp.text))){
txt_inp.text=String(num+Number(txt_inp.text));
} else {
txt_inp.text=String(num);
num=Number(txt_inp.text);