TextEncoderadvanced

TextEncoder — encode multi-byte character

📖 Usage Example

new TextEncoder().encoding === 'utf-8'  // → true

All TextEncoder instances use UTF-8; it is the only supported encoding.

UTF-8 Multi-byte Encoding

The Euro sign '€' (U+20AC) requires 3 bytes in UTF-8.

UTF-8 encodes code points > U+07FF using 3 or 4 bytes. U+20AC encodes as 0xE2 0x82 0xAC.

Challenge: Verify that encode('€').length === 3.

💡 Hints (1)

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