I'm having trouble with a JavaScript module I'm working on. I have an imported class, and while I create an instance of this class in my main script, the methods of this class (like `update()`) can't access variables defined in the main script. For example, I set up my main script like this: I call `const placeholder = new Class();` and then `placeholder.update();`. However, when I try to use the `update()` method, it seems to have no access to variables from the main script's scope; they're just not defined inside the method. Why is this happening?
2 Answers
I think the main issue might be related to how you’ve structured your class. If you’ve defined your entire setup within a constructor, the scope becomes encapsulated. When you’re importing a class, it creates a separate scope which doesn’t share context with the main script. Have you thought about restructuring your code to avoid encapsulation like that?
It sounds like you're running into scoping issues, which is pretty common in JavaScript. When you create an instance of a class, it doesn't automatically have access to the surrounding scope of where it was instantiated. Instead of hoping that the `update()` method accesses the main script's variables, consider passing them in as parameters to the method. That way, `update()` can receive whatever data it needs directly!
I get what you're saying, but isn’t it strange that a class defined in the main script works differently? I can use its methods to access the main script variables without any problems.
Yeah, I’ve noticed that. I just didn’t think it would cause these access issues. I might need to reorganize my code to make it more accessible.