ArrayBuffer.prototype.resize()

Baseline 2024

20247

resize() ArrayBuffer ArrayBuffer

const buffer = new ArrayBuffer(8, { maxByteLength: 16 });

console.log(buffer.byteLength);
// : 8

buffer.resize(12);

console.log(buffer.byteLength);
// : 12

resize(newLength)

newLength: ArrayBuffer

(undefined)

TypeError: ArrayBuffer
RangeError: newLength ArrayBuffer maxByteLength

resize() ArrayBuffer newLength ArrayBuffer ArrayBuffer maxByteLength 0

resize() ArrayBuffer newLength ArrayBuffer byteLength

resize()

168resizable resizable true

const buffer = new ArrayBuffer(8, { maxByteLength: 16 });

if (buffer.resizable) {
  console.log("Buffer is resizable!");
  buffer.resize(12);
}


ECMAScript 2027 LanguageSpecification # sec-arraybuffer.prototype.resize

ArrayBuffer
ArrayBuffer.prototype.resizable
ArrayBuffer.prototype.maxByteLength

MDN

MDN 20251129

GitHub

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