[JavaScript] 取得現在時間

function getDateTime() {

     var date = new Date();

     var hour = date.getHours();
     hour = (hour < 10 ? "0" : "") + hour;

     var min  = date.getMinutes();
     min = (min < 10 ? "0" : "") + min;

     var sec  = date.getSeconds();
     sec = (sec < 10 ? "0" : "") + sec;

     var year = date.getFullYear();

     var month = date.getMonth() + 1;
     month = (month < 10 ? "0" : "") + month;

     var day  = date.getDate();
     day = (day < 10 ? "0" : "") + day;

     return year + ":" + month + ":" + day + ":" + hour + ":" + min + ":" + sec;

 }