jquery源碼分析初步

(function (window,undefiend) {
    //--------------------------jquery變量聲明------------------------------------------------
    var jQuery = function (selector,context) {
        return new jQuery.fn.init(selector,context);
    },
        _jQuery = window.jQuery,

        _$ = window.$,

        document = window.document;  //後面還有好多的變量



    //---------------------------jqeury方法-------------------------------------------------------
    jQuery.fn = jQuery.prototype = {     //給jQuery增加一個fn對象
        init : function (selector, context) {
            var match,elem,ret,doc;
        },

        //--------------------jquery對象訪問-------
        selector:"",

        jquery:"1.4.2",   //jquery版本號

        length:0,

        each:function (callback,args) {
            return jQuery.each(this,callback,args);
        },

        size:function () {
            return this.length;
        },

        toArray:function () {
            return slice.call(this ,0);
        },

        get:function (num) {
            return num == null ?
                this.toArray():
                (num < 0 ? this.slice(num)[0] : this[num]);
        }

    };
    jQuery.fn.init.prototype = jQuery.fn;

    //------------------------jquery插件開發---------
    jQuery.extend = jQuery.fn.extend = function () {
        
    }
})(window);