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TypedArray.prototype.fill()

The fill() method of TypedArray instances changes all elements within a range of indices in a typed array to a static value. It returns the modified typed array. This method has the same algorithm as Array.prototype.fill().

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Syntax

fill(value)
fill(value, start)
fill(value, start, end)

Parameters

value: Value to fill the typed array with.
start Optional: Zero-based index at which to start filling, converted to an integer.
end Optional: Zero-based index at which to end filling, converted to an integer. fill() fills up to but not including end.

Return value

The modified typed array, filled with value.

Description

See Array.prototype.fill() for more details. This method is not generic and can only be called on typed array instances.

Examples

Using fill()

new Uint8Array([1, 2, 3]).fill(4); // Uint8Array [4, 4, 4]
new Uint8Array([1, 2, 3]).fill(4, 1); // Uint8Array [1, 4, 4]
new Uint8Array([1, 2, 3]).fill(4, 1, 2); // Uint8Array [1, 4, 3]
new Uint8Array([1, 2, 3]).fill(4, 1, 1); // Uint8Array [1, 2, 3]
new Uint8Array([1, 2, 3]).fill(4, -3, -2); // Uint8Array [4, 2, 3]

Specifications

Specification
ECMAScript Language Specification # sec-%typedarray%.prototype.fill

Browser compatibility

	Desktop						Mobile						Server
	Chrome	Edge	Firefox	Opera	Safari	Chrome Android	Firefox for Android	Opera Android	Safari on IOS	Samsung Internet	WebView Android	Deno	Node.js
`fill`	45	12	37	32	9.1	45	37	32	9.3	5.0	45	1.0	4.0.0