JQuery Restricting Date Range Based on Dropdown

Question

I'm using the JQuery DatePicker to have the user pick a date and have that show up in a textbox. Easy enough. However a restriction I'm working on is that the date range is restricted based on the month that's currently picked out in a user dropdown menu to the month beginning and end dates.

So for example if someone selects "Aug/2010" in the dropdown then the Datepicker for the textbox must be between August 1st and August 31st - the beginning and end of the month. This

Textbox outputted HTML:

<select id="ctl00_contentlocalnav_Menu_selectmonth">
    <option value="NA">-- Select Month --</option>
    <option value="Jun/2010">Jun/2010</option>
    <option selected="selected" value="May/2010">May/2010</option>
    <option value="Aug/2009">Aug/2009</option>
    <option value="Jul/2009">Jul/2009</option>
</select>

JQuery:

     jQuery(document).ready(function() {
         $("#ctl00_contentactual_txtDate").datepicker({ minDate: new Date(2010, 8 - 1, 1), maxDate: new Date(2010, 8 - 1, 31) });
     });

As you see the JQuery range is hard coded. What's the best way to solve this?

Answer 1

Here's what I would do.

Change the drop down values to contain a min/max date range that is able to be parsed by JavaScript. For example:

<select id="ctl00_contentlocalnav_Menu_selectmonth">
    <option value="NA">-- Select Month --</option>
    <option value="06/01/2010-06/30/2010">Jun/2010</option>
    <option selected="selected" value="05/01/2010-05/31/2010">May/2010</option>
    <option value="08/01/2009-08/31/2009">Aug/2009</option>
    <option value="07/01/2009-07/31/2009">Jul/2009</option>
</select>

You can then bind to the change event of the drop down, and alter the date picker range.

$(function() {
    $('#ctl00_contentlocalnav_Menu_selectmonth').change(function() {
        var ranges = $(this).val().split('-');
        var minDate = new Date();
        minDate.setTime(Date.parse(ranges[0]));
        var maxDate = new Date();
        maxDate.setTime(Date.parse(ranges[1]));
        $("#ctl00_contentactual_txtDate").datepicker('option', 'minDate', minDate);
        $("#ctl00_contentactual_txtDate").datepicker('option', 'maxDate', maxDate);
    });
});​