使用JavaScript获取日期加随机数生成单号

今天学习Javascript,得到一个自动生成单号的JavaScript,留下日后备用:

       function getNowFormatDate() {
           var day = new Date();
           var Year = 0;
           var Month = 0;
           var Day = 0;
           var CurrentDate = "";
           Year = day.getFullYear(); //支持IE和火狐浏览器.
           Month = day.getMonth() + 1;
           Day = day.getDate();
           CurrentDate += Year;
           if (Month >= 10) {
               CurrentDate += Month;
           }
           else {
               CurrentDate += "0" + Month;
           }
           if (Day >= 10) {
               CurrentDate += Day;
           }
           else {
               CurrentDate += "0" + Day;
           }
           return CurrentDate;
       }

       var OrderID = getNowFormatDate() + Math.floor(Math.random() * 1000);

       document.write("随机单号:" + OrderID + "<br />");