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
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