Question

Im having some troubles with conversion. It says invalid date when alert(first_date) and alert(end_date),etc :s Im using datetimepicker to get the dates.

$( "#start_date" ).datetimepicker({
            dateFormat : 'yy-mm-dd',
            timeFormat: 'hh:mm:ss',
            defaultDateTime: "+1w",
            showSecond: true,
            changeMonth: true,
            changeYear: true,
            onClose: function( selectedDateTime ) {
                $( "#end_date" ).datetimepicker( "option", selectedDateTime );
            }
        });
        $( "#end_date" ).datetimepicker({
            dateFormat : 'yy-mm-dd',
            timeFormat: 'hh:mm:ss',
            defaultDateTime: "+1w",
            showSecond: true,
            changeMonth: true,
            changeYear: true,
            onClose: function( selectedDateTime ) {
                $( "#start_date" ).datetimepicker( "option", selectedDateTime );
            }
        });

Now, I need to do something like this:

var first_date = new Date($('#start_date').val());
var last_date = new Date($('#end_date').val());
var nDifference = (last_date - first_date);
var one_day = 1000*60*60*24;
var days = Math.round(nDifference/one_day);

<input type="text" id="start_date" name="start_date" value=""/>
<input type="text" id="end_date" name="end_date" value=""/>

Answer 1

Javascript date reliably accepts ISO date formats…

d = '2012-01-01 06:16:16'

console.log(new Date(d)) // invalid
console.log(new Date(d.replace(' ','T'))) // valid!
// Z at the end accounts for local timezone offset
console.log(new Date(d.replace(' ','T')+'Z'))