TextEncoderintermediate

TextEncoder.encodeInto — written count

📖 Usage Example

const dest = new Uint8Array(10)
const { read, written } = new TextEncoder().encodeInto('Hello', dest)
// read: 5, written: 5

encodeInto() writes bytes into an existing buffer and reports how many were read/written.

encodeInto() Method

encodeInto(source, destination) writes UTF-8 bytes into a pre-allocated Uint8Array and returns { read, written }.

Challenge: Verify that encodeInto('hi', new Uint8Array(10)).written === 2.

💡 Hints (1)

8/10