ArrayBuffer.prototype.resizable
Baseline 2024Newly available
Since July 2024, this feature works across the latest devices and browser versions. This feature might not work in older devices or browsers.
The resizable
accessor property of ArrayBuffer
instances returns whether this array buffer can be resized or not.
Try it
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
Description
The resizable
property is an accessor property whose set accessor function is undefined
, meaning that you can only read this property. The value is established when the array is constructed. If the maxByteLength
option was set in the constructor, resizable
will return true
; if not, it will return false
.
Examples
Using resizable
In this example, we create a 8-byte buffer that is resizable to a max length of 16 bytes, then check its resizable
property, resizing it if resizable
returns true
:
const buffer = new ArrayBuffer(8, { maxByteLength: 16 });
if (buffer.resizable) {
console.log("Buffer is resizable!");
buffer.resize(12);
}
Specifications
Specification |
---|
ECMAScript® 2025 Language Specification # sec-get-arraybuffer.prototype.resizable |
Browser compatibility
Report problems with this compatibility data on GitHubdesktop | mobile | server | ||||||||||||
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resizable |
Legend
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