Adding the same function to multiple buttons in Actionscript 3.0 - actionscript-3

Question

I am trying to add the same button function to 2 different symbols in Flash. One is the logo and the other is text that I converted to a symbol that will show itself during the end scene.
I don't understand what I am doing wrong, but I am extremely new to Actionscript & Flash.
My code looks like this:
import flash.events.MouseEvent;
import flash.display.MovieClip;
import flash.display.SimpleButton;
import flash.net.navigateToURL;
import flash.net.URLRequest;
myButton, txtButton.addEventListener(MouseEvent.CLICK, onClick, false, 0, true);
function onClick(e:MouseEvent):void{
navigateToURL(new URLRequest("http://www.true.land"), "_blank");
}
But I am getting this error:
Attempting to launch and connect to Player using URL
C:\Users\Angela\Desktop\ASU\GIT 314\Assignment
7\AngelaRogers_Assignment7.swf [SWF] C:\Users\Angela\Desktop\ASU\GIT
314\Assignment 7\AngelaRogers_Assignment7.swf - 351066 bytes after
decompression TypeError: Error #1009: Cannot access a property or
method of a null object reference. at
Button/frame1()[Button::frame1:7]

Answer 1

You must write it twice - once for each button, starting with only it's name: child.addEventListener. There is no shortcut to add the same for two objects at once.

Answer 2

You can write a shortcut function to do this easily enough. (As pointed out by others, your comma is what is causing the error). This I believe is more what you're after: (especially if you keep adding more buttons).
import flash.events.MouseEvent;
import flash.display.MovieClip;
import flash.display.SimpleButton;
import flash.net.navigateToURL;
import flash.net.URLRequest;
addClick(myButton, txtButton); //you can add as many items as you want as parameters
function addClick(...buttons):void {
//the ...buttons parameter is known as the '...rest' parameter, and is an array of all the parameters passed to the function
for each(var btn:Sprite in buttons){ //loop through all the items passed in and add the listener
btn.addEventListener(MouseEvent.CLICK, onClick, false, 0, true);
}
}
function onClick(e:MouseEvent):void{
navigateToURL(new URLRequest("http://www.true.land"), "_blank");
}