kb/data/developer.mozilla.org/en-US/docs/Glossary/Snake_case-0.md

title	chunk	source	category	tags	date_saved	instance
Snake case - Glossary | MDN	1/3	https://developer.mozilla.org/en-US/docs/Glossary/Snake_case	reference	web, html, css, javascript, documentation	2026-05-05T05:45:36.463078+00:00	kb-cron

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1. Glossary
2. Snake case

Snake case

Snake case is a way of writing phrases without spaces, where spaces are replaced with underscores _, and the words are typically all lower case. It's often stylized as "snake_case" to remind the reader of its appearance. Snake casing is often used as a variable naming convention. The following names are in snake case: left_shift, bitwise_invert, matrix_transpose. Note that snake case never contains upper case letters. Sometimes, constants are written in all-uppercase, such as JavaScript's Number.MAX_SAFE_INTEGER. This is not typically considered as snake case. Instead, it is sometimes called screaming snake case. Snake case is the most popular convention in Python, Rust, and various other languages.

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• See also

See also

• Related glossary terms:
  • Camel case
  • Kebab case
• typescript-eslint rule: naming-convention