@use JSDoc

@constant

Table of Contents

Synonyms

@const

Syntax

@constant [<type> <name>]

Overview

The @constant tag is used to mark the documentation as belonging to a symbol that is a constant.

Examples

In this example we are documenting a string constant. Note that although the code is using the const keyword, this is not required by JSDoc. If your JavaScript host environment doesn't yet support constant declarations, the @const documentation can just as effectively be used on var declarations.

A string constant representing the color red
/** @constant
    @type {string}
    @default
*/
const RED = 'FF0000';

/** @constant {number} */
var ONE = 1;

Note that the example provides the type in a @type tag. This is optional. Also the optional @default tag is used here too, this will automatically add whatever the assigned value is (for example 'FF0000') to the documentation.