encodeURIintermediateencodeURI('cafΓ©') !== 'cafΓ©' // β true
// non-ASCII characters are percent-encoded as UTF-8 bytesencodeURI() percent-encodes non-ASCII characters as their UTF-8 byte sequences.
encodeURI('cafΓ©') encodes non-ASCII characters, so the result differs from the original.
Challenge: Verify non-ASCII characters are encoded.