js 获取系统时间

//系统当前时间
function timer(){
var date = new Date();
var vYear = date.getFullYear();
var vMon = date.getMonth()+1;
var vDay = date.getDate();
var h = date.getHours();
var m = date.getMinutes();
var se = date.getSeconds();
if(vMon < 10){
vMon = "0" + vMon;
}
if(vDay < 10){
vDay = "0" + vDay;
}
if(h < 10){
h = "0" + h;
}
if(m < 10){
m = "0" + m;
}
if(se < 10){
se = "0" + se;
}
$("#currentDate").html(vYear+"-"+vMon+"-"+vDay);
$("#currentTime").html(h+":"+m+":"+se);
}