ArrayBuffer.prototype.slice()

Baseline

20157

slice() ArrayBuffer ArrayBuffer ArrayBuffer start end start end

// ArrayBuffer 
const buffer = new ArrayBuffer(16);
const int32View = new Int32Array(buffer);
// Int32Array [0, 0, 0, 0] 

int32View[1] = 42;
const sliced = new Int32Array(buffer.slice(4, 12));
// Int32Array [42, 0] 

console.log(sliced[0]);
// : 42

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

start

-buffer.length <= start < 0 start + buffer.length
start < -buffer.length start 0
start >= buffer.length

end

slice() end

-buffer.length <= end < 0 end + buffer.length
end < -buffer.length 0
end >= buffer.length end buffer.length
end start

ArrayBuffer

ArrayBuffer

const buf1 = new ArrayBuffer(8);
const buf2 = buf1.slice(0);


ECMAScript 2027 LanguageSpecification # sec-arraybuffer.prototype.slice

ArrayBuffer
SharedArrayBuffer.prototype.slice()

MDN

MDN 20251129

GitHub

ArrayBuffer
1. ArrayBuffer()
1. isView()
1. [Symbol.species]
Object/Function
1. __proto__
2. constructor