javascript module pattern

Question

User1183902823 posted

tell me how could i call public and private method of a SearchEngine module from out side....need a example. thanks

var SearchEngine = (function ( ) { 
    //Private Method.
    var luckyAlgo = function ( ){
        //create one random number.
        return Math.floor(Math.random()*11);
    }
    //Returning the object
    return {
        //privileged method.
        getYourLuckyNumber : function ( ){
            //Has access to its private method because of closure.
            return luckyAlgo();        
        }
    } 
} ) ( );

Answer 1

User475983607 posted

tell me how could i call public and private method of a SearchEngine module from out side....need a example. thanks

By definition private functions are not visible to the outside. 

Implementation:

SearchEngine.getYourLuckyNumber()

Answer 2

User753101303 posted

Hi,

Or if you prefer you don't have private and public keywords in JavaScript. So it is basically emulated here by :
- declaring a local object with a method. As the object is local it can be called only from with the parent object (which is a function, in js everything is an object including functions)
- returning an object that happens to have a function so it can be called by any code that gets this returned object