Convert a date to system locale date.

formatDate.js

var formatDate = function() {
    moment.locale( window.navigator.userLanguage || window.navigator.language );
    
    $( "[data-type='date']" ).each(
        function() {
            var currentDate = $( this ).html();
            
            if( currentDate !== '' ) {
                var formatedDate = moment( currentDate ).format( 'L' );
                $( this ).html( formatedDate );
            }
        }
    );
};