javascript 延时执行函数

延时执行函数，貌似有些多此一举, 也许还是有点用 记在这儿

var test = {

    delay : function(lifetime){

            var data;

            setTimeout(function(){

                    for (name in test.methods) {

                        eval("data = test.methods."+ name +"();");

                    }

                }, lifetime);

            return this;

        },

    methods : {},

    register : function(name, callback){

            eval("this.methods."+ name +" = callback;");

            return this;

        },

    output1 : function(message){

            this.register("output1", function(){ alert(message); });

            return this;

        },

    output2 : function(message){

            this.register("output2", function(){ alert(message); });

            return this;

        }

}

test.delay(3000).output1("aaa").output2("bbb");