Javascript code for calculate two numbers after press a button

[Guest]

Hello! Can someone please help me?

What I'm looking for are two Javascript codes, for two different buttons, where basically they will do just that:

There will be a button for Addition and another for Subtraction.

Both buttons will take the value you write in the field in the middle of them, and perform the chosen calculation, thus showing the result in the field beside.

In the GIF, the value you entered to perform the calculation is deleted after you click on any of the buttons. Addition will never exceed the Max field. And subtraction will never pass 0.

It would be really cool if that were possible too, but if it's a problem, you don't have to.

Thank you very much!

[Thom Parker · Accepted solution]

This is pretty simple. 

Here's the add script:

this.getField("Current").value  +=  this.getField("Middle").value;

this.getField("Current").value  = "";

Use an if statement to set the limits.

Read this article:

https://www.acrobatusers.com/tutorials/conditional-execution/

[Guest]

Thank you!