YouTipJsref Copywithin
# JavaScript copyWithin() Method
[ JavaScript Array Object](#)
## Example
Copy the first two elements of the array to the last two positions:
var fruits = ["Banana", "Orange", "Apple", "Mango"]; fruits.copyWithin(2, 0);
_fruits_ output:
Banana,Orange,Banana,Orange
[Try it »](#)
* * *
## Definition and Usage
The copyWithin() method is used to copy elements from one position in an array to another position within the same array.
* * *
## Browser Support
The numbers in the table specify the first browser version that fully supports the method.
| Method | | | | | |
| --- | --- | --- | --- | --- | --- |
| copyWithin() | 45.0 | 12.0 | 32.0 | 9 | 32.0 |
* * *
## Syntax
array.copyWithin(target, start, end)
## Parameters
| Parameter | Description |
| --- | --- |
| _target_ | Required. The index position to copy elements to. |
| _start_ | Optional. The start index from where to copy elements. |
| _end_ | Optional. The end index (exclusive) up to which to copy elements (default is _array_.length). If negative, it is treated as _array_.length + _end_. |
## Technical Details
Return Value: Array
JavaScript Version: ECMAScript 6
## More Examples
## Example
Copy the first two elements of the array to the third and fourth positions:
var fruits = ["Banana", "Orange", "Apple", "Mango", "Kiwi", "Papaya"]; fruits.copyWithin(2, 0, 2);
Output:
Banana,Orange,Banana,Orange,Kiwi,Papaya
[Try it »](#)
* * JavaScript Array Object](#)