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Cover image for Differences between Object.freeze( ) and Object.seal( ) in Javascript
Maria Antonella ๐Ÿฆ‹
Maria Antonella ๐Ÿฆ‹

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Differences between Object.freeze( ) and Object.seal( ) in Javascript

They are functions that may appear to do the same action but have significant differences. And it was difficult for me to learn it. I don't know why but they always confused me.

๐Ÿ‘‰ Object.freeze(): It prevents you from adding new properties, removing existing properties and modifying them.

๐Ÿ‘‰ Object.seal(): You can modify existing properties but you can't delete or add new ones.

CRUD Operations

If we differentiate them through the CRUD operations: Create - Read - Update - Delete, we obtain the following comparison.

                  Create     Read    Update     Delete
Object.freeze()    โŒ        โ˜‘๏ธ      โŒ         โŒ
Object.seal()      โŒ        โ˜‘๏ธ      โ˜‘๏ธ         โŒ

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The wonderful world of Javascript. That's all for today :)

Top comments (3)

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clamstew profile image
Clay Stewart

Sounds like a job for deep-freeze npmjs.com/package/deep-freeze

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clementdunstan profile image
clement dunstan siaffu

nice

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itays123 profile image
Itay Schechner

Whoa! That's fascinating!