👀 Views: 96 💬 Answers: 1 📅 Created: 2025-08-27

javascript functions closures objects JavaScript

I'm optimizing some code but I've been working on this all day and I'm working on a personal project and I'm working on a function that updates the properties of a nested object, but I'm working with an scenario where the changes are not retained as expected. I have a function that is supposed to modify a specific property of an object when called, but when I invoke the function multiple times, it seems to revert back to the original state. Here's a simplified version of my code: ```javascript const data = { user: { name: 'Alice', age: 25 } }; function updateUserName(newName) { let user = data.user; user.name = newName; // Trying to update the name console.log(`Updated name to: ${user.name}`); } updateUserName('Bob'); updateUserName('Charlie'); console.log(data.user.name); // Expected: 'Charlie' ``` When I run this, I expect the final console log to output 'Charlie', but instead, it shows 'Alice'. I've checked and confirmed that I'm not accidentally re-initializing the `data` object or its properties elsewhere in my code. I've tried using `Object.assign()` and also directly modifying the `data` object to store the reference, but I need to seem to resolve the scenario. Here's what I tried: ```javascript function updateUserName(newName) { Object.assign(data.user, { name: newName }); console.log(`Updated name to: ${data.user.name}`); } ``` Despite my attempts, the question continues. Could this be related to scoping issues or how JavaScript handles closures? Any insights on what I'm missing would be greatly appreciated! I'm working on a CLI tool that needs to handle this. Has anyone else encountered this? My development environment is Debian. Could someone point me to the right documentation? This is part of a larger service I'm building. I'm open to any suggestions.