javascript instance accessor property
ArrayBuffer.prototype.resizable
The resizable accessor property of ArrayBuffer instances returns whether this array buffer can be resized or not.
Interactive exampleOpen the canonical MDN source to run this embedded demo.
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
SpecificationsStandards references are available on the canonical MDN page.
Browser compatibility
Browser compatibilityCompatibility data is available on the canonical MDN page.