The incident happened at the family zoo attraction in Huntingdonshire (Picture: Johnsons of Old Hurst) A young boy was ...
It is tricky. Shallow copies like the spread operator only copy the first level. Nested objects stay linked. JSON.stringify is a common trick. It fails with Map, Set, and Date. The structuredClone () ...
A better way to make a deep copy is: const copy = structuredClone (obj); This function preserves many built-in JavaScript types, including Dates, Maps, and Sets.
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