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Editorial Team
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Asked: 2026-05-20T11:03:06+00:00

In our application we are caching some frequently used data. Recently we have developed

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In our application we are caching some frequently used data. Recently we have developed a jquery plugin for our web app. Some of the plugin methods needs to access application cache.
I tried to access the cache, and result is undefined.

For example:

Application Class

Application(){
cachedObjects = {};
}

<body>
$(function(){
Application();
});

Plugin:

(function( $ ){

var methods = {
initialize : function( options ) { },
getDataFromCache : function() { 
var data = Application.cachedObjects.someObject;// Here, data is undefined.
 }
};

 $.fn.menuPlugin = function( method ) {
 if ( methods[method] ) {
  return methods[ method ].apply( this, Array.prototype.slice.call( arguments, 1 ));
 } else if ( typeof method === 'object' || ! method ) {
  return methods.initialize.apply( this, arguments );
} else {
}    

};
})( jQuery );

How can i access those application objects?

Any suggestions would be appreciative.

Thanks!

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1 Answer

  1. Editorial Team

    There are many problems here. First you define a function without the function keyword. Second you declare cachedObjects without the var keyword, so it becomes global. I think what you mean is

    function Application(){
    var cachedObjects = {};
}

    In any case cachedObjects will only be a local variable inside Application, not a property of the Application object (which happens to be a function).

    You can declare an Application object in a much simpler way with

    var Application = {
    cachedObjects: {}
};

    In any case, if you are developing a jQuery plugin you should not create a global variable Application; you can use a variable local to your plugin like

    (function($) {// All the definition of your plugin goes in this function
    var Application = ...
})(jQuery);

    or store the cached data in a closure.

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