Javascript模块模式

var yourObject = (function() { 
    // private data variables 
    return { //w w  w .  j  av  a  2  s. c  o  m
        // public methods and properties 
    }; 
}()); 

<p>For example: </p>

var book = (function() { 
    var version= 1; 
    return { 
        name : "Javascript", 
        getVersion: function() { 
            return version; 
        }, 
        publishNewVersion : function() { 
            version++; 
        } 
    }; 
}()); 

console.log(book.name);      
console.log(book.getVersion());  //Javascript

book.version = 2; 
console.log(book.getVersion());  //1

book.publishNewVersion(); 
console.log(book.getVersion());  //2

var book = (function() { 
    var version = 1; 
    function getVersion() { 
        return version; 
    } 
    function publishNewVersion() { 
        version++; 
    } 
    return { 
        name : "Javascript", 
        getVersion: getVersion, 
        publishNewVersion : publishNewVersion 
    }; 
}()); 

console.log(book.name);      
console.log(book.getVersion());  //Javascript

book.version = 2; 
console.log(book.getVersion());  //1

book.publishNewVersion(); 
console.log(book.getVersion());  //2