30-seconds-of-code/blog_posts/javascript-naming-conventions.md

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JavaScript naming conventions	Naming conventions	story	javascript,variable,cheatsheet	chalarangelo	blog_images/naming-conventions.jpg	Naming conventions, while not easy to enforce, make code easier to read and understand. Learn how to name your variables in JavaScript with this handy guide.	2020-05-20T02:32:10+03:00	2021-06-12T19:30:41+03:00

Variables

• Names are case-sensitive, lowercase and uppercase are different.
• Start variable names with a letter, use camelCase for names.
• Variable names should be self-descriptive, describing the stored value.
• Boolean variables are usually prefixed with is or has.

Functions

• Names are case-sensitive, lowercase and uppercase are different.
• Start function names with a letter, use camelCase for names.
• Use descriptive names, usually verbs in the imperative form.
• Common prefixes are get, make, apply etc.
• Class methods follow the same rules.

Constant

• Names are case-sensitive, lowercase and uppercase are different.
• Define constants at the top of your file, function or class.
• Sometimes UPPER_SNAKE_CASE is used, while other times plain camelCase.

Classes

• Names are case-sensitive, lowercase and uppercase are different.
• Start class names with a capital letter, use PascalCase for names.
• Use descriptive names, explaining the functionality of the class.
• Components, which are used in frontend frameworks follow the same rules.

Private

• Prefix any variable or function with _ to show intention for it to be private.
• As a convention, this will not prevent other parts of the code from accessing it.