jsp - Comparing different format dates in javascript -

i have got date objects in jsp. 1 coming java page , other 1 coming same jsp.
formats of dates are:

wed may 07 00:00:14 cdt 2014   07-may-2014 

now how compare these 2 dates, please help. don't know how convert these in javascript same format.

can please help?

why don't export date in java in same format javascript uses?

simpledateformat sdf = new simpledateformat("dd-mmm-yyyy"); 

or

simpledateformat sdf = new simpledateformat("eee mmm dd hh:mm:ss z yyy"); 

that way easier compare using:

var n = date1.localecompare(date2);