JS Built-ins
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SharedArrayBufferintermediate

SharedArrayBuffer — use with Int32Array

📖 Usage Example
const sab = new SharedArrayBuffer(8)
sab instanceof SharedArrayBuffer  // → true

SharedArrayBuffer instances can be checked with instanceof.

SharedArrayBuffer with Typed Arrays

A SharedArrayBuffer can back a typed array like Int32Array.

Challenge: Verify that an Int32Array backed by a 16-byte SharedArrayBuffer has length 4.

💡 Hints (1)
  • • Int32Array uses 4 bytes per element, so a 16-byte buffer holds 4 elements.