Introduction
This reference page provides comprehensive documentation for all ScriptDoc tags, in alphabetical order.
Several tags have "synonyms" where you can use two differently named tags to document the same thing. You can use a synonym by using the exact same syntax as the original tag, but just substituting the tag name.
The section for each tag includes the following information:
- Short description of the tag
- Syntax
- What the tag applies to
- Longer explanation of the tag
* Example (Some tags have multiple examples)
Reference
The following tags are valid for code documentation:
@alias
ID for a class or function.
Applies to: Any
Syntax
@alias fooBar
Description
Use the @alias tag to ID a class or function if you have used a "shorthand" way to code the full name for that class or function.
Example
This example shows the @alias tag used to id a function called fooBar in the FOO.Lib namespace.
FOO.Lib.update(FOO.Lib, {
/**
* Returns a function that will return a number one greater than the previous returned value, starting at n.
* @alias fooBar
* @alias FOO.Lib.fooBar
* @param {Object} n Number to start with. Default is 1.
* @return {Function) Returns a function that will return a number one greater than the previous returned value.
*/
fooBar: function (n/* = 1 */) {
if (arguments.length === 0) {
n = 1;
}
return function () {
return n++;
};
},
@author
Author of a JavaScript file or function.
Applies to: Any
Syntax
@author Author-name [email]
Description
Use @author to credit the author of a JavaScript file or function.
Example
This example shows the @author tag used with the @fileoverview and @version tags to provide header information for a JavaScript file.
/** * @projectDescription Joe Smith's wonderful JavaScript library. * * @author Joe Smith jsmith@company.com * @version 0.1 */
@classDescription
Description of the class.
Applies to: Function
Syntax
@classDescription Description
Description
Use the @classDescription tag to give a short description of the class (if applicable).
Example
This example shows a sample documentation block for a basic Shape class.
/**
* Create a new instance of Shape.
*
* @classDescription This class creates a new Shape.
* @return {Shape} Returns a new Shape.
* @type {Object}
* @constructor
*/
function Shape() {
}
@constructor
Shows that a function is a constructor for a class.
Applies to: Function
Syntax
@constructor
Description
Use the @constructor tag to signify that a function is a constructor if you are coding in an object-oriented programming style.
Example
This example shows a sample documentation block for a basic Shape class.
/**
* Create a new instance of Shape.
*
* @classDescription This class creates a new Shape.
* @return {Object} Returns a new Shape object.
* @constructor
*/
function Shape() {
}
@deprecated
Signifies that a function or a property has been deprecated.
Applies to: Function or property.
Syntax
@deprecated
Description
Use the @deprecated tag to show that a function or a property has been deprecated and should not be used.
Example
This example shows a @deprecated tag added to a documentation block for a function.
/**
* This function gets a foo by name.
* @param {Object} fooName Name of the foo to retrieve.
* @return {Object} Returns a new foo.
* @deprecated
*/
@exception
Specifies the type of exception thrown by a function.
Applies to: Function
Syntax
@exception {Exception} Exception-description
Description
Use the @exception tag to specify any exceptions thrown by a function. You can specify multiple exceptions in a documentation block.
Example
This example shows a function that throws two exceptions--a "MemoryException" and a "GeneralShapeException".
/**
* This function creates a new Shape object.
*
* @exception {MemoryException} Throws a memory exception if out of memory.
* @exception {GeneralShapeException} Throws a general shape exception if the object is not a shape.
* @return {Object} Returns a new shape object.
*/
@id
Unique identifier for a function or property.
Applies to: All
Syntax
@id identifierName
Description
Use @id to link a function or property to its documentation in an external @sdoc file. Add the @id tag both inline right above a function and to the documentation block in the .sdoc file to create the link.
Example
This example shows an inline @id tag for the function foo.
/** @id */
function foo() {
alert("Foo!");
}
@memberOf
Signifies that a function is a member of the specified class.
Applies to: Function, Property.
Syntax
@memberOf Class
Description
Use the @memberOf tag to signify that a function is a member of the specified class.
Example
This example shows that the getFoo function is a member of the fooBar class.
/**
* @memberOf fooBar
*/
function getFoo(){
}
@method
Signifies that a function is a method of a class, if applicable.
Applies to: Function
Syntax
@method
Description
Use the @method tag to signify a method of a class if you are coding in an object-oriented programming style.
Example
This example shows a @method tag.
/** * @method */
@namespace
Creates the namespace prefix for a library file.
Applies to: File
Syntax
@namespace namespaceName
Description
Creates the link between the namespace of a library file and an external .sdoc file.
Example
This example shows how to use the @namespace tag to link the namespace of a library to an .sdoc file.
The excerpt below would go at both the top of the library file that contains the "ajax" namespace for the "snazzyLib" library and the corresponding "ajax.sdoc" file that contains the documentation for the "ajax" namespace in snazzyLib:
/** * @namespace snazzyLib.ajax */
@param
Use @param to tag each parameter for a function.
Applies to: Function
Syntax
@param {Type[, Type, ... ]} [Parameter |...] Parameter-Description
Description
Gives information about a parameter for a function. Specify the data type between the curly braces. If the parameter is optional, add '[]' around the parameter name.
Examples
Standard example
The following example shows a parameter for a function that takes a String named myDog.
/**
* @param {String} myDog The name of the dog.
*/
Optional parameter example
The following example shows an optional parameter that can be either a String or a Date.
/**
* @param {String, Date} [myDate] Specifies the date, if applicable.
*/
Multiple objects example
The following example shows a parameter that can be one or more Strings.
/**
* @param {String} ... Takes one or more dog parameters.
*/
@projectDescription
Gives a description of a JavaScript file.
Applies to: File.
Syntax
@projectDescription Description
Description
Use the @projectDescription tag as the first tag in the first documentation block for a JavaScript file. The @projectDescription tag signifies that the entire documentation block is part of a project description.
Example
This example shows the @projectDescription tag used with the @author and @version tags to provide header information for a JavaScript file.
/** * @projectDescription This library contains a lot of classes and functions. * * @author Joe Smith jsmith@company.com * @version 0.1 */
@return
Specifies information about the return value(s) of a function.
Applies to: Function
Syntax
@return {Type [, Type, ...]} Returns-Description
Description
@return gives a description for the return value of a function.
Example
This example shows a return value for a function that returns a new foo object.
/**
* @return {Object} Returns a new foo object.
*/
@sdoc
Defines the path to an external .sdoc file for a library file.
Applies to: File
Syntax
@sdoc filePath
Description
Associates an external @sdoc file with a JavaScript file. Use either a relative or absolute path.
Example
This example shows a documentation block that associates an "ajax.sdoc" file in the "scripts/snazzyLib" directory with the current JavaScript file:
/** * @sdoc scripts/snazzyLib/ajax.sdoc */
@see
Links to another related class or function.
Applies to: Any
Syntax
@see Class | #Function | Class#Function
Description
Use the @see tag to add a link to another class, a function within the current class, or a function in another class.
Examples
Function example
This example shows a link to a function named "foo" in the same class as the one being documented.
/** * @see #foo */
Class example
This example shows a link to a class named "fooBar".
/** * @see fooBar */
Function in another class example
This example shows a link to a function named "foo" in another class named "fooBar".
/** * @see fooBar#foo */
@since
Specifies since which version the library, function, or property became valid.
Applies to: File, Function, Property
Syntax
@since Version-number
Description
Specifies since which version the library, function, or property became valid.
Example
This example shows a @since tag, used in conjunction with @projectDescription, @author, and @version tags. A documentation block like this would go at the top of a JavaScript file.
/** * @projectDescription This library contains a lot of classes and functions. * * @author Joe Smith jsmith@company.com * @version 1.1 * @since 1.0 */
@type
Specifies what data type a property is.
Applies to Property
Syntax
@type {Type}
Description
Specifies what data type a property is.
Example
This example uses the @return tag with the @type tag to show the return type for a function that creates a new foo.
/**
* This property describes what type of shape an object is.
* @type {Object} This property describes what type of shape an object is.
*/
@version
Specifies the version number of the JavaScript file or class.
Applies to: Any
Syntax
@version Version-Number
Description
Specifies the version number of the JavaScript file or class.
Example
This example shows the @version tag used with the @projectDescription and @author tags to provide header information for a JavaScript file.
/** * @projectDescription A description of the file ahead * * @author Joe Smith jsmith@company.com * @version 0.1 */
