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Question 21/50
A developer creates an object where its properties should be immutable and prevent properties from being added or modified.
Which method should be used to execute this business requirement ?
Which method should be used to execute this business requirement ?
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There exits another similar question.
A developer creates an object where it prevents new properties from being added to it and makes all existing
properties as non-configurable. Values of present properties can still be changed as long as they are writable.
Which method should be used to execute this business requirement?
Object.freeze()
Object.seal()
Object.lock()
Object.const ()
The answer is: Object.seal()
freeze makes an object completely immutable, while Object. seal allows existing properties to be modified, but prevents the addition and deletion of new properties.