Скачать или смотреть JavaScript Object.freeze() vs Object.seal()

#CodingWithAarti
JavaScript provides two useful methods to restrict changes to objects: Object.freeze() and Object.seal(). They are often used to protect objects from unintended modifications, especially in state management and functional programming.

Object.freeze()
Definition:
Object.freeze(obj) makes an object completely immutable. You cannot add, remove, or change any properties.

Key Points:

Cannot add new properties

Cannot delete properties

Cannot update existing values

Properties become non-configurable and non-writable

Object.seal()
Definition:
Object.seal(obj) allows you to modify existing properties but prevents adding or deleting properties.

Key Points:

Cannot add new properties

Cannot delete properties

✅ Can update existing values

Properties become non-configurable but may remain writable