CRLF - MDN Web Docs Glossary: Definitions of Web-related terms 编辑

CR and LF are control characters or bytecode that can be used to mark a line break in a text file.

• CR = Carriage Return (\r, 0x0D in hexadecimal, 13 in decimal) — moves the cursor to the beginning of the line without advancing to the next line.
• LF = Line Feed (\n, 0x0A in hexadecimal, 10 in decimal) — moves the cursor down to the next line without returning to the beginning of the line.

A CR immediately followed by a LF (CRLF, \r\n, or 0x0D0A) moves the cursor down to the next line and then to the beginning of the line.

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General knowledge

• Newline on Wikipedia
• Carriage return on Wikipedia