javascript datetime string
function getNowStr(){
var AddZero = function (num) {
return (num >= 0 && num < 10) ? "0" + num : num + "";
},
now = new Date(),
strDateTime = [
[now.getFullYear(), AddZero(now.getMonth() + 1), AddZero(now.getDate())].join("/"),
[AddZero(now.getHours()), AddZero(now.getMinutes()), AddZero(now.getSeconds())].join(":")
].join(" ");
return strDateTime;
}