Develop Reference

Making Chosen Dropdown Read only (not disabled)

I'm looking to make a chosen dropdown menu read only, and I need to do this dynamically using a jQuery selector. If I set it to disabled using:
$("#dropdownDepartment").attr("disabled","disabled").trigger('chosen:updated');
the value isn't POSTed but I need it to be.
I have tried
$("#dropdownDepartment").attr('readonly',true).trigger('chosen:updated');
but this doesn't work.
I'm using Chosen v1.4.2 and jQuery v2.1.4.
Help appreciated! Thank you.

The best solution for me was such an ugly trick $("#dropdownDepartment").prop('disabled',true).trigger('chosen:updated').prop('disabled',false).
So chosen is disabled but value from select is POSTed.

There are a few options you could do.
Disable the drop down and store the value in a hidden field and send that in a POST.
Disable all the other selections so only the one selected is enabled
$('#dropdownDepartment option:not(:selected)').attr('disabled', true);
Disable the drop down and before you do a post enable it
When you want to disable it turn it into a read only textbox

try this:-
var select = $('select');
var oldVal=$('select').val();
select.chosen().on('change',function(e){
select.val(oldVal);
select.trigger("chosen:updated");
});
Demo

I have a workaround at the same. So hope it will help someone in the future (I guess you already did the solution).
First print the selected option value of the chosen select into a hidden input like the following. For $_POST value get the value from this hidden input $_POST['myselect']:
<input type="hidden" name="myselect" value="selected_option_value_goes_here" />
Then disable the chosen select. But it is safe to set the hidden input value to the current one before disable it:
$('input[name=myselect]').val($(".chosen-select").val());
$('.chosen-select').attr("disabled", true).trigger("chosen:updated");
N.B. If you don't want to disable it then just no need to update the value of the hidden input on change event of the chosen select.
A working demo can be found by clicking here.

I may be late to the party, but I came across the same issue as OP. The workaround I have found to post back the values even if they are disabled is to re-enable them when the form is submitted.
$("form").bind("submit", function () {
$("#TheList *").prop("disabled", false).trigger("chosen:updated");
});
Notice the [space][star] after TheList, it is to recursively re-enable each child in the list.

we can achieve the excepted behaviour by removing the pointer event on chosen-container div.
with this even if we dont enable the input its value will be posted with form submit
//to disable
$('.chosen').parent().find('.chosen-container').css({'pointer-events': 'none','opacity':0.5});
//to enable
$('.chosen').parent().find('.chosen-container').css({'pointer-events': '','opacity':1});

try this
$("#dropdownDepartment").attr('disabled', 'disabled');
$("#dropdownDepartment").data('chosen').search_field_disabled();
$("#dropdownDepartment").removeAttr('disabled');
$("#dropdownDepartment").trigger('chosen:updated');

jQuery: select default value and trigger change for multiple Selects

I am new to jQuery and found a couple of different approaches for this online but nothing worked for me so I hope someone can help me.
I have a number of Selects. Each of them has one option with a class "defaultSel" to indicate that this should be selected as the default when a certain event is triggered.
My approach was the following which does change the Selects value but I can't get it to actually trigger the change (neither adding .change() nor .trigger('change') worked for me here).
Also, if there is a way to avoid .each here at all please let me know as well.
My jQuery:
$(this).closest('div').nextAll('div.hiddenDiv').show().find('.defaultSel').each(function(){
$(this).prop('selected', true).change();
});
Many thanks in advance for any help,
Mike

If your option is the thing with the defaultSel class then this should work:
$(this).closest('div').nextAll('div.hiddenDiv').show().find('select:has(option.defaultSel)').each(function(){
$(this).find('option.defaultSel').prop('selected', true).end().change();
});
Just changing two things here:
find('select:has(option.defaultSel)')
will get the select set you're actually wanting, and
$(this).find('option.defaultSel').prop('selected', true).end().change();
this here is the select so you need to find the default option, then end() will return you to the select and you can trigger change() on it.

Unset a JQuery Select

I have this code setup in JS Fiddle so that everyone can see it. I have a piece of code that with the help of the JQuery UI library will make it into a JQuery Select.
$("select").selectbox();
but now my question is, how do i revert to the old select ?
the reason why i want to do this is people should be able to click on one of the radio buttons and it should filter the select by that gender (the class of each option has the gender) but this doesnt work when the select has already been converted

This shoud work:
$('select').selectbox('detach');

you could add a class to the the selected object instead of altering it completely, you can then always select it again quickly

check if value changed upon change() trigger

I noticed that change() can be triggered for a <select> even if the option was not changed.
See my jsfiddle example.
Changing the selection will change the text input displayed. However (and I do know it's a bit of stretch) if you:
select the drop down by clicking on its label Selection:
press down on the keyboard (assuming Show A was selected)
then select Show A with the mouse pointer it will trigger change().
Is there an easy workaround for this (right now I'm thinking of using a variable to keep track what the last selection was upon change())?
EDIT:
It seems it is a Chrome-specific problem. I was able to fix the problem by using a variable to keep track of what the last selected item was. I guess this a bug left for the jQuery/Chrome developers.

I would store the current value as data on the element (rather than a variable) like this:
$('#variable').data('currentval', $('#variable').val()).change(function() {
var t = $(this);
if (t.data('currentval') != t.val()) {
$(this).data('currentval', $(this).val());
$('#listA').toggle('fast');
$('#listB').toggle('fast');
}
});
http://jsfiddle.net/emMx6/2/

JQuery clean autocomplete combobox value

I used a jquery combobox for autocompletion and I needed to clean its value.
I got into a solution which is like this: http://jsfiddle.net/BbWza/30/
The problem is that the code below clears all textboxes of all combos in the screen. I'd like to clear only ONE combo (let's say the first one, for example).
$('.ui-autocomplete-input').focus().val('');
Although there is only one clear link button, it doesn't matter which combo will be cleared as long as only one is.
The solution should work for N combos in the screen. E.g. Each button should empty its corresponding combo.

You can add ids to the generated fields by adding this line as the last line of _create():
input.attr( 'id', $(select).attr( 'id' )+'-input' );
Now you can select individual fields with the ids:
$('#combobox-input').focus().val('');

To clear just only one combo you must select it with it's id:
$('#combobox').focus().val('');
$('#combobox').autocomplete('close');
with your code you are selecting all comboboxes because you are using a class selector.
EDIT if you want to make two buttons (one for each combobox) you could do:
$('.clicky').click(function() {
var combo= $(this).prevAll('input:first');
combo.focus().val('');
combo.autocomplete('close');
return false;
});
fiddle here: http://jsfiddle.net/BbWza/39/

Your jsfiddle is a little ambiguous as to which combo box should be cleared - there are two combo boxes but only one clear link, so it's not obvious if the link is supposed to clear just one or both combo boxes.
I suspect in the real world that each combo box would have it's own clear link. Selecting the right text box for your clear link all depends on your html. One simple case would be where the clear link is the next sibling to your <select> element:
<select class="combo">
...
</select>
Clear
Then you could create the combos in one call by using class. Then create the clear click handlers all at once. The handler would use .prevAll(".ui-autocomplete-input") to find its associated textbox.
$("select.combo").combobox();
$("a.clearCombo").click(function () {
$(this).prevAll('.ui-autocomplete-input').first()
.focus()
.val('')
.autocomplete('close');
return false;
});
Working demo at jsfiddle
If your link is not a sibling of your combo box, that's ok. Either find its parent that is a sibling and use the above approach. Or, if that won't work, find the common parent of both the combo and the link. This only works if the common parent contains only one combo and one link:
<span class="comboContainer">
<span>
<select class="combo">
...
</select>
</span>
Clear
</span>
You use .closest(".comboContainer") and .find(".ui-autocomplete-input"):
$("select.combo").combobox();
$("a.clearCombo").click(function () {
$(this).closest(".comboContainer").find('.ui-autocomplete-input')
.focus()
.val('')
.autocomplete('close');
return false;
});
Working demo at jsfiddle
The nice thing about these techniques is that the link doesn't need to know the id of its associated combobox. We can just infer it from the html. This makes it very easy to move combos around and add new ones.
Two suggestions:
Add a clear method to your plugin. Your widget users shouldn't have to know its internal workings. In your example, you have to know that widget uses .autocomplete(). This also prevents you from changing your implementation later. Adding a "clear" method would simplify your click handler to just $(this).prevAll("select.combo").combobox("clear").
Give your widget the option to create the clear button itself. Users can always disable it and add their own clear button if they want.

Well, in the example the following would only clear the last combobox:
$('.ui-autocomplete-input').last().focus().val('');
This would clear the first one:
$('.ui-autocomplete-input').first().focus().val('');

You can clear it in event "close" of the autocomplete
$("#your-input").autocomplete({
source: items,
close: function (event, ui) {
$(this).val("");
}
});

How to give clear button for autocombobox please tell me
You can add ids to the generated fields by adding this line as the last line of _create():
input.attr( 'id', $(select).attr( 'id' )+'-input' );
Now you can select individual fields with the ids:
$('#combobox-input').focus().val('');