JsDoc example for CoffeeScript via http://stackoverflow.com/questions/7833021/how-to-document-coffeescript-source-code-with-jsdoc

jsdoc.coffee

### define function variable before block to avoid code being appended to closing part of JSDoc comment ###
cube = ''

###*
 * Funtion to calculate cube of input
 * @param {number} Number to operate on
 * @return {number} Cube of input
###

cube = (x) -> x*x*x

jsdoc.js

/* define function variable before block to avoid code being appended to closing part of JSDoc comment */
var cube;
cube = '';
/**
 * Funtion to calculate cube of input
 * @param {number} Number to operate on
 * @return {number} Cube of input
 */
cube = function(x) {
  return x * x * x;
};