js中国标准时间转换成datetime格式

var format = function (time, format) {
var t = new Date(time);
var tf = function (i) { return (i < 10 ? '0' : '') + i };
return format.replace(/yyyy|MM|dd|HH|mm|ss/g, function(a) {
switch (a) {
case 'yyyy':
return tf(t.getFullYear());
break;
case 'MM':
return tf(t.getMonth() + 1);
break;
case 'mm':
return tf(t.getMinutes());
break;
case 'dd':
return tf(t.getDate());
break;
case 'HH':
return tf(t.getHours());
break;
case 'ss':
return tf(t.getSeconds());
break;
}
});
}

format(result, 'yyyy-MM-dd HH:mm:ss');