javascript小应用之获取当前日期格式

//获取当前时间          
//格式：'2013-09-02 08:08:01'
function getTimeNum(){
     function U(t){  
        if(t<10)return '0'+t;  
        return t;  
    }  
    var d = new Date();
    var str = d.getFullYear()+"-"+
              U(d.getMonth()+1)+"-"+
              U(d.getDate())+" "+
              U(d.getHours())+":"+
              U(d.getMinutes())+":"+
              U(d.getSeconds());
    return str;
}

-