JS.16.01 Mid-levelCore — asked often

deepClone (with cycles, Map, Set, Date, RegExp)

Comes up in: Coding

This concept is being written. It gets the full five steps — explanation, predict, interview angle, practice with tests, and review cards. Here is exactly what it will cover, so you can study it elsewhere in the meantime.

What it covers

recursion
WeakMap for cycles
special types
preserving prototype (option)
symbols as keys
comparison with structuredClone

Words you will know

cycle

What you will practise

implement with tests

Interview questions this answers

Implement deepClone that handles circular references.