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javascriptarrays
John Abraham
John Abraham

Reputation: 18781

a function to copy an array that could effect the original array?

Just a thought experiment .. no use case

concat docs

Note: Concatenating array(s)/value(s) will leave the originals untouched. Furthermore, any operation on the new array will have no effect on the original arrays, and vice versa.

Is there a function to make a copy an array that could have an effect on the original arrays, and vice versa?

example:

var data = [1,2,3]
var copyData = makeCopy(data);

if data changes so does copyData and vice versa.

what would be a practical use case for this?

Upvotes: 1

Views: 36

Answers (1)

alex
alex

Reputation: 490153

Once you make a copy on an array, it won't ever affect the original array.

However, this doesn't apply to what the array points to, which may be objects.

Upvotes: 2

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