Datetime calculate library in javascript

Question

I have a lot of data retrived from server with the following format:

{id:1,name:"xx",type:1,updated:'2014-01-01 12:21'},
{id:1,name:"xx",type:2,updated:'2014-01-01 12:21'},
{id:1,name:"xx",type:3,updated:'2014-01-01 12:21'},
.................................

Now I have to make some statistics:

1 By month

Calculate months belongs to this year and the range(start and end) of each month.

Calculate how many items for different type for each month in the current year.

2 By week

Calculate days belongs to this week and the range(start and end) of each day.

Calculate how many items for different type for every day in the current week.

3 By hour

Calculate hours(24) belongs to today and the range(start and end) of each hour.

Calculate how many items for different type for each hour;

I wonder if there is any date-time library to make the calculate work easier?

Answer 1

There are various libs can do this, I recommend Moment.js.