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What is the purpose of using Symbols in JavaScript?
What is the purpose of using Symbols in JavaScript?
- To create objects that can only be accessed by specific code
- To add unique property keys to an object that won't collide with other keys (correct)
- To hide information from the global registry
- To create multiple instances of an object
What is the difference between Symbol() and Symbol.for()?
What is the difference between Symbol() and Symbol.for()?
- Symbol() and Symbol.for() are identical in function
- Symbol() adds a symbol to the global registry, while Symbol.for() creates a new symbol
- Symbol() creates a new symbol for a given key, while Symbol.for() returns a unique symbol every time it is called
- Symbol() creates a new symbol every time it is called, while Symbol.for() returns the same symbol for a given key (correct)
What is the benefit of using Symbols for encapsulation?
What is the benefit of using Symbols for encapsulation?
- It provides weak encapsulation and information hiding (correct)
- It allows for multiple instances of an object to be created
- It makes it easier to access object properties from other code
- It provides strong encapsulation and information hiding
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