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JavaScript naming conventions

Submitted by: @import:30-seconds-of-code·Mar 2, 2026·

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conventionsjavascriptnaming

Problem

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.
Names are case-sensitive, lowercase and uppercase are different.

Solution

Variable names should be self-descriptive, describing the stored value.
Boolean variables are usually prefixed with is or has.
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.

Context

From 30-seconds-of-code: naming-conventions

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