Question

I’ve been using a nice, elegant plugin called DropKick for my webapp http://jamielottering.github.com/DropKick/, and I seem to be having a slight issue with it and am not sure how to go about trying to fix it. I am trying to programmatically change the value of the select drop down menu. Below is a description of my issue, and a link to JSFiddle.

HTML:

<select id="start" class="timePreference">
   <option value="Choose">Choose</option>
   <option value="1">1</option>
   <option value="2">2</option>
   <option value="3">3</option>
   <option value="4">4</option>
   <option value="5">5</option>
   <option value="6">6</option>
   <option value="7">7</option>
   <option value="8">8</option>
   <option value="9">9</option>
   <option value="10">10</option>
   <option value="11">11</option>
   <option value="12">12</option>
</select>

jQuery:

 $('.timePreference').dropkick();

 $('#someDiv').click(function() {
    $('#start').val("1");
    alert($('#start').val());

 );

When I show the value in alert, it shows as one, however when I look at the labels on the option it stays at the default or whatever it was prior to the change.

For example, if my default was “Choose” and I click someDiv, then alert will show “1”, so it changing, but the select dropdown will still show “Choose”. Any suggestions. I may just be missing something small, not sure.

FSFiddle: http://jsfiddle.net/kdp8791/aNS9R/61/

Answer 1

working demo : With Commnet http://jsfiddle.net/aNS9R/218/ && without comments only 7 lines needed: http://jsfiddle.net/aNS9R/220/

-phew-

So, to start with I tried Change event [of dropkick] with in drop kick but its only for the change event within select and not from external element binding. i.e. in your case change button.

So; this is what I have done:

Explanation (if you interested)

I used firebug to inspect the variable and found that dropkick marshal your existing select with nice styling now when you used $('#timePreference option:selected').val("1"); dropkick actually did changed the selected value with in your element with id=timePreference but the div and ul and li styling which is created by dropkick is not changed yet.

For the chosen span it has a class .dk_label and for the current (green color) is given by .dk_option_current class.

Please Note I pretty much read the plugin and figure out what is happening from here: https://github.com/JamieLottering/DropKick/blob/master/jquery.dropkick-1.0.0.js

If you wish to use firebug and see how elements are se use this link : http://jsfiddle.net/aNS9R/218/show/ and play around with your inspect mode, you will see dropkick styling and how it works.

JQuery code

 $(document).ready(function() {

    $('#timePreference').dropkick();

    $('#go').click(function(){

        // Assign slected option value to your select here - 
        // you can also make it something like this but your existing cdoe works anyways $("select_id option[value='3']").attr('selected','selected');
        $('#timePreference').val("1");

        //Now assign the select text value to the dropkick added element.
        //If you will use firebug you can see the nice <div>, <ul> & <li> structure which morph your dropdown.

        $('.dk_label').text(1);

      // further if you want green color to be selected. class=dk_option_current does that
      // You need to loop through the dropkick hierachy

      $(".dk_options_inner li").each(function(){

        $(this).removeAttr('class');
        if ($(this).text() == "1"){
           $(this).attr('class', 'dk_option_current');
        }
      });

    });
});
​

Hope this helps you mate, cheers!

HTML

     <select id="timePreference">
        <option value="Choose" selected="selected">Choose</option>
        <option value="1">1</option>
        <option value="2">2</option>
        <option value="3">3</option>
        <option value="4">4</option>
        <option value="5">5</option>
        <option value="6">6</option>
        <option value="7">7</option>
        <option value="8">8</option>
        <option value="9">9</option>
        <option value="10">10</option>
        <option value="11">11</option>
        <option value="12">12</option>
     </select>

    <input name="go" id="go" type="button" value="change" />

​