In a WeakMap, keys must be of type _________, and they are not enumerable.
- Object
- String
- Symbol
- Number
In a WeakMap, keys must be of type Symbol, and they are not enumerable. Symbols are unique and help in creating private properties or methods. Using other types as keys will result in unexpected behavior.
Loading...
Related Quiz
- What is the significance of side effects in a function in terms of functional programming?
- Consider a scenario where you have an array of numbers, and you need to create a new array with only the numbers greater than 10. Which method would you use?
- Which array method would you use to transform an array into a single value?
- When importing a named export, what syntax must you use?
- Using the rest operator in function parameters collects the rest of the arguments into an ________.