javascript设计思维

//一.把参数当作私有变量使用
(function (a, b) {
    //把参数当作私有变量使用，省略了var，也节省了行数
    console.log(b)  //undefined，所有未赋值的变量均为undefined
})(window);

//二.把参数作为参数使用
var obj_init = function (b, d, f) {
    //1.定义初始对象
    var m = {}, v = {},e = {};  
    m = {
        //初始对象m
    };
    v = {
        //初始对象v
    };
    e = {
        //初始对象e
    };
    //2.合并对象
    jQuery.extend(m, b);
    jQuery.extend(v, d);
    jQuery.extend(e, f);
    //3.返回对象
    return {    
        model: m,
        view: v,
        events: e
    }
}
function ObjCall_Fn(f) {
    f = f || {};
    //4.调用对象
    var e = obj_init(f.model, f.view, f.events),  
	c = e.model,
	b = e.view,
	d = e.events;
    //5.返回对象
    return {
        add:function(){
            return e.model.id;
        },
        model: c,
        view: b,
        events: d
    }
}
//6.最后调用对象
var fn = ObjCall_Fn({
    model: {
        id:100
    },
    view:{
    },
    events:{
    }
});
var ad = fn.add();
//fn.……;
console.log(ad) //结果：100