javascript - I need it to return 0 if blank with jQuery datepicker -


i have html form passes date , time javascript have things done it. jquery used pass variable javascript is: 

var pieces;   $(document).ready(function() {       $('#datepicker').datepicker({           onselect: function(datetext, inst) {             window.pieces = datetext.split('/');             $('#day').val(pieces[0]);             $('#month').val(pieces[1]);             $('#year').val(pieces[2]);            }     }) });

the javascript used analyze uses: 

var day1 = parseint(pieces[1],10);

how can parse blank value datepicker returns error telling me doesn't exist?

presumably initial string 15/05/2013.

the js used analyze uses:

var day1 = parseint(pieces[1],10);

how can parse blank value datepicker returns error telling me doesn't exist?

i'm not sure you're asking. if mean "if original string blank, want value day1 of 0", can check value , either return value number or 0 depending on result of test:

var day1 = typeof pieces[1] == 'undefined' ? +pieces[1] : 0;

incidentally, code, day1 should peices[0].


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