模块——倒计时

var Global={};
Global.namespace = function (str) {
    var arr=str.split(‘.‘),
        o=Global;
    for(var i= 0,len=arr.length;i<len;i++){
        o[arr[i]]=o[arr[i]] || {};
        o=o[arr[i]];
    }
};
/*
*   CountDown module
*   usage: new Global.Countdown() and use init() ,send params to init,like
*   {
*       day：10，
*       hour:10,
*       minute:10,
*       second:10
*   }
*   Author :wz
*   2015-12-20
*
* */
Global.namespace(‘Countdown‘);
(function(){
    Global.Countdown.end=0;
    var day=document.getElementById(‘day‘);
    var hour=document.getElementById(‘hour‘);
    var minute=document.getElementById(‘minute‘);
    var second=document.getElementById(‘second‘);
    Global.Countdown=function(obj){
        Global.Countdown.end=new Date().getTime()+(obj.day*24*60*60+obj.hour*60*60+obj.minute*60+obj.second)*1000;
    };

    Global.Countdown.prototype = {
        init:function(){
            var now=new Date().getTime();
            if(Global.Countdown.end-now > 0){
               setTimeout(Global.Countdown.prototype.init,1000);
               var obj= Global.Countdown.prototype.timeformat(Global.Countdown.end-now);
               day.innerHTML=obj.day;
               hour.innerHTML=obj.hour;
               minute.innerHTML=obj.minute;
               second.innerHTML=obj.second;
            }else{
                second.innerHTML=‘00‘;
                alert(‘time out‘)
            }
        },
        timeformat:function(t){
            var days = Math.floor(t/(1000*60*60*24));
            var hour=this.check(Math.floor((t%(1000*60*60*24))/(1000*60*60)));
            var minute=this.check(Math.floor((t%(1000*60*60))/(1000*60)));
            var second=this.check(Math.round((t%(1000*60))/1000));
            return {
                ‘day‘:days,
                ‘hour‘:hour,
                ‘minute‘:minute,
                ‘second‘:second
            }
        },
        check:function(str){
            if(str<10) return ‘0‘+str;
            return str;
        }
    };
}());
new Global.Countdown({
    ‘day‘:0,
    ‘hour‘:0,
    ‘minute‘:0,
    ‘second‘:5
}).init();