Comments in CSS are used to add instructions and do not affect the style. They start with / comment text / syntax and end with /. There are two types of CSS comments: single-line (//comment text) and multi-line (/comment text */). Use comments to explain the purpose of the code, record changes, provide more information, and disable blocks of code. Best practices include keeping it short and clear, reviewing it regularly, adding whitespace, and formatting multi-line comments.
How to write comments in CSS
In CSS, comments are used to add instructions or remarks to the code, and It will not affect the style of the page. Comments are useful when debugging, documenting code, and collaborating with other developers.
Syntax for CSS comments
CSS comments use the following syntax:
/* 注释文本 */
The start of the comment is represented by the /
character pair, The end of a comment is indicated by the */
character pair.
Comment types
There are two types of comments in CSS:
-
Single-line comments: is used for Comment a line of code with the syntax
//
followed by the comment text. -
Multi-line comments: is used to comment multi-line code, the syntax is
/*
followed by the comment text, ending with*/
.
Using Comments
Common reasons for using comments in CSS include:
- Explain the purpose and function of the code.
- Record the change history of the code.
- Provide more information about a specific rule or property.
- Disable code blocks for debugging or testing purposes.
Best Practices for Comments
- Keep comments short, clear, and understandable.
- Avoid using obscure terms or abbreviations.
- Comments are reviewed and updated regularly to ensure they remain accurate and useful.
- Add a space before the comment to improve code readability.
- For multi-line comments, use indentation or other formatting techniques to improve readability.
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