Character U+0004
Char U+0004
Char
␀
Unicode
U+4
Conversion Results
dec: 4
hex: 0x4
oct: 4
bin: 00000100
Appears in charsets
Canonical
/char/u0004Unicode & UTF
Unicode 映射与其在常见编码（UTF‑8/16/32）中的表示，便于复制粘贴与调试。
| Unicode | U+4 | |
| Unicode dec | 4 | |
| UTF-8 (hex) | 04 | |
| UTF-8 (bin) | 00000100 | |
| UTF-16 | 0004 | |
| UTF-32 | 00000004 |
HTML & URL
Web 场景常用的 HTML 实体、URL 转义与 QP 编码，方便在页面/邮件/日志中使用。
| HTML Number |  | |
| HTML Hex |  | |
| URL Escape | %04 | |
| Quoted-printable | =04 |
Source Code Escapes
C, C++, and Java
"\u0004"
CSS Code
\0004
JavaScript
"\u0004"
Perl
\x{4}
Python 2
u"\u0004"
Python 3
"\u0004"
Ruby
\u{4}