Theslice() method ofTypedArray instances returns a copy of a portion of a typed array into a new typed array object selected fromstart toend (end not included) wherestart andend represent the index of items in that typed array. The original typed array will not be modified. This method has the same algorithm asArray.prototype.slice().

Try it

const bytes = new Uint8Array([10, 20, 30, 40, 50]);const byteSlice = bytes.slice(1, 3);console.log(byteSlice);// Expected output: Uint8Array [20, 30]

Syntax

slice()slice(start)slice(start, end)

Parameters

startOptional

Zero-based index at which to start extraction,converted to an integer.

endOptional

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

SeeArray.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 bytes = new Uint8Array([1, 2, 3]);bytes.slice(1); // Uint8Array [ 2, 3 ]bytes.slice(2); // Uint8Array [ 3 ]bytes.slice(-2); // Uint8Array [ 2, 3 ]bytes.slice(0, 1); // Uint8Array [ 1 ]

Specifications

Browser compatibility

See also

• Polyfill ofTypedArray.prototype.slice incore-js
• es-shims polyfill ofTypedArray.prototype.slice
• JavaScript typed arrays guide
• TypedArray
• Array.prototype.slice()
• String.prototype.slice()