Difference between freeze and seal

Question

I just heard about the JavaScript methods freeze and seal, which can be used to make any Object immutable.

Here\'s a short example how to u

Answer 1

I wrote a test project which compares these 3 methods:

• Object.freeze()
• Object.seal()
• Object.preventExtensions()

My unit tests cover CRUD cases:

• [C] add new property
• [R] read existed property
• [U] modify existed property
• [D] remove existed property

Result: