# Math Equasions
**URL:** https://forum.kirupa.com/t/math-equasions/28088
**Category:** flash
**Created:** [August 10, 2003, 12:09am UTC](https://forum.kirupa.com/t/math-equasions/28088 "2003-08-10T00:09:59Z")
**Posts on this page:** 7
**Page:** 1
### Author:  [@mikenash87](https://forum.kirupa.com/u/mikenash87)
#### Post date: [August 10, 2003, 12:09am UTC](https://forum.kirupa.com/t/math-equasions/28088/1 "2003-08-10T00:09:59Z")
Can someone explain to me how I can set up an an application so that when a person types “3” in one text box and types “4” in another box, I can get another box to automatically give me what they add up to…
I understand if I have three text boxes… giving var names of “a”,“b”, and “c” I could do…
a=2\*3
b=3+4
c=a+b
However that is me typing in the value of “a” and “b”.
How can I do it so another person can type in the two values so “C” can calculate the value?
---
### Author:  [@system](https://forum.kirupa.com/u/system)
#### Post date: [August 10, 2003, 12:50am UTC](https://forum.kirupa.com/t/math-equasions/28088/2 "2003-08-10T00:50:38Z")
As easy as one, two, three… 😉
[AS]// define addition function
addition = function () {
// convert string to number
var a = a\_txt.length ? parseInt(a\_txt.text) : 0;
var b = b\_txt.length ? parseInt(b\_txt.text) : 0;
// do I need to explain this line? :\*\*\*\*P
c\_txt.text = a+b;
};
// create TextFields
this.createTextField(“a\_txt”, 0, 0, 0, 80, 16);
this.createTextField(“b\_txt”, 1, 100, 0, 80, 16);
this.createTextField(“c\_txt”, 2, 200, 0, 80, 16);
// set text format
a\_txt.setNewTextFormat(new TextFormat(“Verdana”, 10));
b\_txt.setNewTextFormat(new TextFormat(“Verdana”, 10));
c\_txt.setNewTextFormat(new TextFormat(“Verdana”, 10));
// set TextField type to input
a\_txt.type = “input”;
b\_txt.type = “input”;
// admit characters only from 0 to 9 and .
a\_txt.restrict = “0-9.”;
b\_txt.restrict = “0-9.”;
// show TextField border
a\_txt.border = true;
b\_txt.border = true;
// call function
a\_txt.onChanged = addition;
b\_txt.onChanged = addition;[/AS]
Of course, you can manually create the TextFields, I just didn’t want to attach a FLA. =)
---
### Author:  [@system](https://forum.kirupa.com/u/system)
#### Post date: [August 10, 2003, 1:03am UTC](https://forum.kirupa.com/t/math-equasions/28088/3 "2003-08-10T01:03:15Z")
thank you 🙂
---
### Author:  [@system](https://forum.kirupa.com/u/system)
#### Post date: [August 10, 2003, 1:17am UTC](https://forum.kirupa.com/t/math-equasions/28088/4 "2003-08-10T01:17:46Z")
You’re welcome, mike. 😛
---
### Author:  [@system](https://forum.kirupa.com/u/system)
#### Post date: [August 10, 2003, 1:21am UTC](https://forum.kirupa.com/t/math-equasions/28088/5 "2003-08-10T01:21:23Z")
Kax, how the hell do you know so much AS!??!?! Tell me now!!! 😱
---
### Author:  [@system](https://forum.kirupa.com/u/system)
#### Post date: [August 10, 2003, 1:30am UTC](https://forum.kirupa.com/t/math-equasions/28088/6 "2003-08-10T01:30:44Z")
Where did you learn all these commands,kax?
---
### Author:  [@system](https://forum.kirupa.com/u/system)
#### Post date: [August 10, 2003, 1:30am UTC](https://forum.kirupa.com/t/math-equasions/28088/7 "2003-08-10T01:30:54Z")
That’s a really simple question, my dear friend… =)
I have no life. 😛
Seriously now, I’m experimenting all day, or at least whenever I’m not working. Also, I’ve learned a lot from all of you and helping people. 😉
There’s no secret, there are sources all over the web.
…And patience helps a lot too. 😛