为什么我的Date对象返回当前日期？

Question

I have my time since epoch stored as a number: 1444749469000. However, when I try to convert it to a Date object, using Date(1444749469000) , it just gives me the current date instead of the one it should be (around Tue Oct 13 2015).

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> Date(1444749469000)
"Tue Apr 12 2016 09:28:30 GMT-0700 (PDT)"

Answer 1

You need a new before the Date because Date is a constructor:

 var d = new Date(1444749469000) alert(d); 

Answer 2

Because when you call Date as a function, it will return a string of current date and ignore the given value. In order to retrieve the Date object, you must initialize the Date constructor with keyword new .

var now = Date(1444749469000);
var date = new Date(1444749469000);
console.log(typeof now); //string
console.log(typeof date); //object