JavaScript Array method: copyWithin()
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The copyWithin() method (when applied to a
JavaScript
array) copies
elements to and from specified positions.
It
has the following syntax with the following parameters. It returns an array
(the changed array).
array.copyWithin(target, start, end)
|
Parameter
|
Required / Optional
|
Description
|
|
target
|
Required
|
The index position
where elements start to be copied to
|
|
start
|
Optional
|
The index position
where elements start to be copied from (default is zero)
|
|
end
|
Optional
|
The index position
where elements stop being copied from (default is array.length
|
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