JavaScript Object Freeze And Seal Methods
Object.freeze() makes objects immutable, while Object.seal() restricts modifications but allows value changes.
Object.freeze and Object.seal in JavaScript When working with objects in JavaScript, controlling their mutability is essential to prevent unintended changes. Two methods provided by JavaScript for this purpose are Object.freeze() and Object.seal(). Understanding their differences and use cases is key to writing robust code. 1. Object.freeze() The Object.freeze() method makes an object immutable. This means: No new properties can be added. Existing properties cannot be modified, removed, or reconfigured. The object is effectively "frozen" and cannot be changed in any way....