An example from the JSDoc #usage page.

usage-revised.js

// Usage example revised

/**
 * Shape is an abstract base class. It is defined simply
 * to have something to inherit from for geometric 
 * subclasses
 * @constructor
 */
function Shape( color ) {
  this.color = color;
}


/**
* Get the name of the color for this shape
* @returns A color string for this shape
*/
Shape.prototype.getColor = function() {
  return this.color;
}

/**
* Circle is a subclass of Shape
*/
function Circle( radius ){
  this.radius = radius;
}

/**
* Circle inherits Shape
*/
Circle.prototype = new Shape( null );

/**
* A very rough value for pi
*/
Circle.PI = 3.14;

/**
* Get the radius of this circle 
* @returns The radius of this circle
*/
Circle.prototype.getRadius = function() {
  return this.radius;
};

usage.js

/**
 * Shape is an abstract base class. It is defined simply
 * to have something to inherit from for geometric 
 * subclasses
 * @constructor
 */
function Shape(color){
 this.color = color;
}

// Bind the Shape_getColor method to the Shape class
Shape.prototype.getColor = Shape_getColor;

/**
* Get the name of the color for this shape
* @returns A color string for this shape
*/
function Shape_getColor(){
 return this.color;
}

/**
* Circle is a subclass of Shape
*/
function Circle(radius){
 this.radius = radius;
}

/**
* A very rough value for pi
*/
Circle.PI = 3.14;

/**
* Get the radius of this circle 
* @returns The radius of this circle
*/
function Circle_getRadius(){
 return this.radius;
}

// Circle is a subclass of Shape
Circle.prototype = new Shape(null);