Web Reference: Learn multiple beginner-friendly ways to clone an array in JavaScript without maintaining reference to the original. Includes examples using spread operator, slice, and more. As we know in Javascript arrays and objects are by reference, but what ways we can do copy the array without changing the original array later one? Here are few ways to do it: Jul 23, 2025 · This program shows that cloning a multi-dimensional array creates a shallow copy—the top-level array is duplicated, but inner arrays are still shared references.
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