TypedArray.prototype.slice()
Baseline Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.
The slice()
method of TypedArray
instances returns a copy of a portion of a typed array into a new typed array object selected from start
to end
(end
not included) where start
and end
represent the index of items in that typed array. The original typed array will not be modified. This method has the same algorithm as Array.prototype.slice()
.
Try it
const uint8 = new Uint8Array([10, 20, 30, 40, 50]);
const array1 = uint8.slice(1, 3);
console.log(array1);
// Expected output: Uint8Array [20, 30]
Syntax
slice()
slice(start)
slice(start, end)
Parameters
start
Optional-
Zero-based index at which to start extraction, converted to an integer.
end
Optional-
Zero-based index at which to end extraction, converted to an integer.
slice()
extracts up to but not includingend
.
Return value
A new typed array containing the extracted elements.
Description
See Array.prototype.slice()
for more details. This method is not generic and can only be called on typed array instances.
Examples
Return a portion of an existing typed array
const uint8 = new Uint8Array([1, 2, 3]);
uint8.slice(1); // Uint8Array [ 2, 3 ]
uint8.slice(2); // Uint8Array [ 3 ]
uint8.slice(-2); // Uint8Array [ 2, 3 ]
uint8.slice(0, 1); // Uint8Array [ 1 ]
Specifications
Specification |
---|
ECMAScript® 2025 Language Specification # sec-%typedarray%.prototype.slice |
Browser compatibility
Report problems with this compatibility data on GitHubdesktop | mobile | server | ||||||||||||
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slice |
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- Full support
- Full support