Date Object Behaviour [duplicate]

Question

In JavaScript, Result of the Date Object is different when it comes to Different Time Zones and Different Notation.

eg.

var res= "2018-08"; 
var dat=new Date(res);  

Result are :

Tue Jul 31 2018 22:00:00 GMT-0200 (West Greenland Summer Time)  for GMT-0200  Time Zone 

and

 Wed Aug 01  2018 05:30:00 GMT+0530 (India Standard Time)

But When

var res= "2018/08"; 

We are getting same date

Wed Aug 01 2018 00:00:00 GMT+0530 (India Standard Time)

Wed Aug 01 2018 00:00:00 GMT-0300 (Atlantic Daylight Time)

Can Anyone Explain me Why its not Constant when we gave "-" as delimiter

Answer 1

In order for the object to understand the format you're feeding it, is by actually telling it the format you're feeding it.

The below might help you achieve what you're after:

Option 1:

Using date set methods or using the Date.parse() functionality (if that satisfies your needs).

Option 2:

Using something ott similar to momentjs that will do the logic for you.