Having trouble with my Flash Comic - actionscript-3

Question

I'm making a webcomic in Adobe Animate right now, and the way a viewer can turn the "page" is by clicking on the screen.
First, I put a code on one frame shown as follows:
import flash.events.KeyboardEvent;
import flash.events.MouseEvent;
import flash.ui.Keyboard;
stop();
stage.addEventListener(MouseEvent.CLICK,forward2);
stage.addEventListener (KeyboardEvent.KEY_DOWN,forward);
function forward2 (event:MouseEvent) :void {
gotoAndStop(currentFrame+1);
}
function forward (e:KeyboardEvent): void {
if (e.keyCode == Keyboard.RIGHT)
gotoAndStop(currentFrame+1);
}
Then, if I wanted a scene to play out without the viewer having to click on the screen, I wrote another code:
import flash.events.KeyboardEvent;
import flash.events.MouseEvent;
import flash.ui.Keyboard;
stop();
stage.addEventListener(MouseEvent.CLICK,forward4);
stage.addEventListener (KeyboardEvent.KEY_DOWN,forward3);
function forward4 (event:MouseEvent) :void {
gotoAndPlay(currentFrame+1);
}
function forward3 (e:KeyboardEvent): void {
if (e.keyCode == Keyboard.RIGHT)
gotoAndPlay(currentFrame+1);
}
So because the function was already defined on another frame, I posted this code on the frame after the animation:
import flash.events.KeyboardEvent;
import flash.events.MouseEvent;
import flash.ui.Keyboard;
stop();
stage.addEventListener(MouseEvent.CLICK,forward2);
stage.addEventListener (KeyboardEvent.KEY_DOWN,forward);
I tried to make sure that the script was constant throughout the frames I wanted it to be used for by inserting a blank frame for each frame I wanted it to be active on. However, when I tested it, as soon as I clicked on the frame I put the code on (The one without the function defined), it just sent me back to the beginning.
What am I doing wrong?

Answer 1

When you add a listener to any object it will continue to exist until it is explicitly removed.
Before going to the next frame you should run:
stage.removeEventListener(MouseEvent.CLICK, forward2);
stage.removeEventListener(KeyboardEvent.KEY_DOWN, forward);
This will remove the event listeners and prevent forward2 and forward from running when you click or press a key on some other frame.