模块加载原理（第二种）

var kmodule = (function(){
    var modules = {}
    ,config = {}
    ,define = function(deps,factory){
        typeof deps == 'function' && (
            factory = deps,
            deps = []
        )
        if(!array.isarray(deps)){
            deps = [deps];
        }
        var exports = function(name,impl){
            if(!modules[name]){
                kmodule[name] = modules[name] = impl;
            }
        }
        typeof factory == 'function' && factory.apply(factory,[exports])
    }
    
    ,require = function(deps,handle){
        typeof deps == 'function' && (
            handle = deps,
            deps = []
        )
        if(!array.isarray(deps)){
            deps = [deps];
        }
        for(let i = 0; i < deps.length; i++){
            deps[i] = modules[deps[i]]
        }
        handle.apply(handle,deps);
    }
    
    return {
        define:define,
        require:require,
    };
    
})();


kmodule.define(function(exports){
    var inittable = function(){
        return "初始化表格模块";
    }
    var tableimpl = {
        inittable:inittable
    }
    exports('table',tableimpl)
});

//第一种调用方式
kmodule.require('table',function(){
    var table = kmodule.table
    alert(table.inittable());
});
//第二种调用方式
kmodule.require('table',function(table){
    alert(table.inittable());
});