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ArrayBuffer.prototype.resizable

Baseline 2024
Newly available

Since 2024 7, this feature works across the latest devices and browser versions. This feature might not work in older devices or browsers.

ArrayBuffer resizable .

In this article

const buffer1 = new ArrayBuffer(8, { maxByteLength: 16 });
const buffer2 = new ArrayBuffer(8);

console.log(buffer1.resizable);
// Expected output: true

console.log(buffer2.resizable);
// Expected output: false

resizeable undefined . . maxByteLength resizeable true false .

resizable

16 8 resizable resizable true .

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

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

Specification
ECMAScript 2027 LanguageSpecification
# sec-get-arraybuffer.prototype.resizable

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  2. ArrayBuffer
    1. ArrayBuffer()
    1. ArrayBuffer.isView()
    1. ArrayBuffer[Symbol.species]
    1. ArrayBuffer.prototype.resize()
    2. ArrayBuffer.prototype.slice()
    3. ArrayBuffer.prototype.transfer()
    4. ArrayBuffer.prototype.transferToFixedLength()
    1. ArrayBuffer.prototype.byteLength
    2. ArrayBuffer.prototype.detached
    3. ArrayBuffer.prototype.maxByteLength
    4. ArrayBuffer.prototype.resizable
  9. Object/Function
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