The Javascript Float32Array byteLength property returns the length in bytes of a typed array.
Float32Array.byteLength
The Javascript Float32Array byteLength property is a read only property.
The value is set when a Float32Array is created and cannot be changed.
If the Float32Array is not specifying an byteOffset or a length, the length of the referenced ArrayBuffer will be returned.
Using the Javascript Float32Array byteLength property
var buffer = new ArrayBuffer(8); var uint8 = new Float32Array(buffer); console.log(uint8.byteLength); // 8 (matches the byteLength of the buffer)