Intermediate
JavaScript
Q88 / 100
What is the Object.groupBy() method (ES2024)?
Correct! Well done.
Incorrect.
The correct answer is B) A static method that groups iterable elements into an object based on a key-returning callback
B
Correct Answer
A static method that groups iterable elements into an object based on a key-returning callback
Explanation
Object.groupBy([{type:"a"},{type:"b"},{type:"a"}], x => x.type) returns { a: [...], b: [...] }. Map.groupBy() does the same for Map results.
Progress
88/100