Using JavaScript with True/False Buttons

Although as Walt says its hard to figure out exactly whats wrong without a sample... i do have 2 suggestions that might help.

Remove the Trigger#2 from the list and add it to a 'When variable changes'. That way you can only trigger it a wanted change of some variable.

Also be aware that variables in Storyline are always strings. So i do think the line in your code...
var Concate = List_Smash + Bacon;
is a bit weird. As i see it both List_Smash and Bacon are 2 text variables and all you do is adding them together. In fact the same as concat( ) does in Javascript but it would be good to use descriptive names as that makes life easier. So something like..
var breakfastString = List_Smash + Bacon;
would make more sense to me. You can always use this to detect what type a value is...
console.log("List_Smash is: "+typeof List_Smash);

But to really help you...add the Storyline.