U+FFFF
| 名称 | 未定义 |
| 编码 | U+FFFF |
| HTML代码 |   |
| CSS代码 | \FFFF |
| 分区 | 特殊 |
| 版本 | 1.1 (1993) |
| Age | 1.1 |
| Bidi Paired Bracket Type | None |
| Composition Exclusion | No |
| Case Folding | FFFF |
| Simple Case Folding | FFFF |
编码
| 编码 | hex | dec(bytes) | dec | binary |
|---|---|---|---|---|
| UTF-8 | EF BF BF | 239 191 191 | 15712191 | 11101111 10111111 10111111 |
| UTF-16BE | FF FF | 255 255 | 65535 | 11111111 11111111 |
| UTF-16LE | FF FF | 255 255 | 65535 | 11111111 11111111 |
| UTF-32BE | 00 00 FF FF | 0 0 255 255 | 65535 | 00000000 00000000 11111111 11111111 |
| UTF-32LE | FF FF 00 00 | 255 255 0 0 | 4294901760 | 11111111 11111111 00000000 00000000 |