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Date

Date objects are based on a time value that is the number of milliseconds since 1 January 1970 UTC. There is no literal syntax for Date.Without the 'new' keyword, Date() returns a string instead of a Date object.Operators like <,>,<=,>= can also be used on Dates. The + operator converts a date to an integer, which equals d.getTime().

Notice how in the last two examples, the month starts from 0. In the last example, the month and millisecond parameters are also 'carried forward'.
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console.log(Date());  // current date and time// Tue Jul 18 2017 17:56:58 GMT+0800 ...console.log(new Date());  // current date and time// Tue Jul 18 2017 17:56:58 GMT+0800 ...
   console.log(new Date(1234567890123)); // ms since 1970 // Sat Feb 14 2009 07:31:30 GMT+0800 ...
   console.log(new Date('25 May 1982'));// Tue May 25 1982 00:00:00 GMT+0800 ...
   console.log(new Date('25-05-1982'));// Invalid Dateconsole.log(new Date('05-25-1982'));// Tue May 25 1982 00:00:00 GMT+0800 ...
   console.log(new Date('05/25/1982 10:00'));// Tue May 25 1982 10:00:00 GMT+0800 ...console.log(+(new Date())); // 1500464861478console.log((new Date()) > (new Date('05-30-2015'))); // trueconsole.log(new Date(1982,4,25,13));// Fri May 25 1982 13:00:00 GMT+0800 ...
   console.log(new Date(1982,13,25,13,25,33,3333));// Fri Feb 25 1983 13:25:36 GMT+0800 ...

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