Copy Before Changing

MediumFoundationsPRO

Practice JavaScript array copying by adding an item to a returned list while keeping the original topics array unchanged for later code. This medium exercise contrasts updated return values with source state that later code still trusts.

What you'll practice

Work with JavaScript array copying by adding an item to a returned list while keeping the original topics array unchanged for later code
Contrasts updated return values with source state that later code still trusts

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