понедельник, 17 июня 2013 г.

Javascript Namespace Declaration

I use the approach found on the Enterprise jQuery site, here
Here is their example showing how to declare private & public properties and functions. Everything is done as a self-executing anonymous function.
(function( skillet, $, undefined ) {
    //Private Property
    var isHot = true;

    //Public Property
    skillet.ingredient = "Bacon Strips";

    //Public Method
    skillet.fry = function() {
        var oliveOil;

        addItem( "\t\n Butter \n\t" );
        addItem( oliveOil );
        console.log( "Frying " + skillet.ingredient );
    };

    //Private Method
    function addItem( item ) {
        if ( item !== undefined ) {
            console.log( "Adding " + $.trim(item) );
        }
    }    
}( window.skillet = window.skillet || {}, jQuery ));
So if you want to access one of the public members you would just go skillet.fry() or skillet.ingredients
What's really cool is that you can now extend the namespace using the exact same syntax.
//Adding New Functionality to the Skillet
(function( skillet, $, undefined ) {
    //Private Property
    var amountOfGrease = "1 Cup";

    //Public Method
    skillet.toString = function() {
        console.log( skillet.quantity + " " + 
                     skillet.ingredient + " & " + 
                     amountOfGrease + " of Grease" );
        console.log( isHot ? "Hot" : "Cold" );
    };    
}( window.skillet = window.skillet || {}, jQuery ));

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