I am having a html dropdown
<select id="ExternalIp" onchange="externalIpchange()"></select>
I bind the data to dropdown through jquery and a I am passing data from controller which is working properly. I want to change the look and feel of the dropdown so I called a function
$("#ExternalIp").selectbox();
Now the look and feel of drop down is changed but it is not showing the data which I bind to dropdown. I am not getting what is the problem. Plz help
It appears as if the jQuery plugin you are using resets the values bound to the select list.
Look for a method provided within your jQuery plugin to rebind the data which you earlier attached with jQuery or style your element first and then try binding the values.
Cheers!!!
Related
I'm using select2.full.js
I'm not using any require.js to help me pull in modules, I'm basically using my know how from everything I learned in v3.5
I've been trying countless of hours, wrapping my head around this, but I have no idea how to make ajax cascading dropdowns.
Example: You load up the page, there is the first select2 dropdown that pulls data using ajax automatically (you don't enter anything.. data is there on the page load from the server), a default value is selected. Since that default value is selected, the second select2 drop down will use that value to make an ajax call to populate its own list. Now, when I select another value in the first select2 dropdown, the second select2 dropdown will reflect those changes with the new dataset.
What I've able to come up with was a 3 dropdowns that you can populate on a page load, but when you do any ajax request, the dropdown data doesn't change.
It's been two years since I used select2, and the library keeps changing, the documentation keeps changing, I'm at my wits end with this library. But I feel drawn to it by the bootstrap support, and the look and feel. The functionality, the way to implement things, the documentation is just so unbelievably awful.
I don't have any useful code at all, I've been pulling, plugging, modifying, etc.. and now I'm moving to my hair and teeth.
ANY useful example to do this would be awesome.
Just found my answer..
I was using the templating:
<select id="test">
<option value="1">1</option>
<option value="2">2</option>
</select>
to:
data = [{id: "1", text: "1"}, {id: "2", text: "2"}];
<input id="test" type="hidden" />
and just kept my jquery on select2 the same. So it was really just a change in the templating from to that solved it.
However, the only downside to this is that when you are refreshing new data from these drop downs, the highlighted (selected value) is always the first item in the drop down list, even though that's not the selected value shown in the dropdown.
Here is a small code snippet to make Select2 (v4.x) cascading dropdown - https://gist.github.com/ajaxray/187e7c9a00666a7ffff52a8a69b8bf31
Using this module, options of a select2 list box will be loaded/refreshed by ajax based on selection of another select2 list box.
Example use -
new Select2Cascade($('#province'), $('#district'), 'path/to/geocode', {type:"district", parent_id: ''});
Selected value of parent select2 listbox will be set to the parent_id of the data object before ajax call.
I have a selectmenu like the following
<select name="scale" id="scale">
<option selected>linear</option>
<option>root</option>
<option>square</option>
</select>
To make it nice I use jQuery UI v1.11.2.
$('#scale').selectmenu();
I can now read the value of the dropdown by
alert($('#scale').val());
which results in 'linear' as the answer. I can also set the value to 'square' by using
$('#scale').val('square');
alert($('#scale').val());
which correctly gives the answer 'square'. But (!!!) the dropdown does not display this on the screen. So actually I can set and read the value, but the visual representation doesn't change - the widget does not refresh. I read somewhere to throw a .change() but without any effect. I also tried answers like in jQuery UI Selectmenu value set dynamically does not change visible selected value but failed. Any $('#scale').selectmenu('value', 'square'); resuts in the error message Error: no such method 'value' for selectmenu widget instance.
Can anyone help how to refresh the widget after setting it to a new value?
It should work as you expect it to if you just call refresh after using .val():
$('#scale').val('square');
$("#scale").selectmenu("refresh");
The reason for this is that the .val() function is provided by jQuery, while the widget is part of jQueryUI. [presumably the $.ui authors didn't want to alter the $ functionality, though this is purely speculation on my part]
Select boxes converted to Select2, do not automatically integrate with unobtrusive validation mechanism in ASP.NET MVC framework.
For example, on a form which contains a regular select box (marked as required in model definition), submitting the form while no options have been selected in the select box, will cause the border and background of the select box to take a reddish color, and by using #Html.ValidationMessageFor, error messages, if any, can be displayed beside the box. However if the select box is converted to a Select2 component, then none of the mentioned features work any more. Even the validation error message will not show up.
It seems that the reason for even the validation error message not showing, is because Select2 changes the display CSS property of the original select box to none (display:none), and I guess the unobtrusive validation script does not bother generating error messages for invisible fields.
Any ideas / solutions?
This issue isn't really specific to Select2, but rather to the jQuery unobtrusive validator.
You can turn on validation for hidden fields as highlighted in this answer.
$.validator.setDefaults({
ignore: ''
});
As the comments noted, it didn't work inside an anonymous callback function within $(document).ready(). I had to put it at the top level.
I've run into similar issues with the select2 plugin. I don't know exactly which features you're using specifically, but in my experience, when you set an element as a select2 in the document.ready event, the plugin will change some of the element's attributes on the fly (inspect one of the elements after your page has finished loading - oftentimes you'll see the id and class properties are different than what you're seeing when you view source).
It's difficult to offer more without actually seeing the code, but here's a few ideas to get you started:
First off, obviously make sure you have the a link to your select2.css stylesheet in the header.
Then, since you're talking about form submissions, I'd recommend you examine whether or not you're getting a full postback or submitting via AJAX (if you're using jQueryMobile, you're using AJAX unless you override it in the jquerymobile.js file or set a data-ajax="false" in your form attributes). You can just look at the value returned by Request.IsAjaxRequest() for this. Obviously if you're submitting via ajax, you won't hit the document.ready event and the select2 won't initialize properly and you'd need to figure out a way around that. Try refreshing the page after the submit and see if it renders the select2 component.
Then I'd suggest examining the elements and see if they're not behaving like you'd expect because you're actually trying to work with classes that the plugin has reassigned at runtime. You can either just adjust your logic, or you can dig into the select2 code itself and change the behavior - it's actually fairly well-documented what the code is doing, and if you hop on the Google group for select2, Igor is usually pretty quick to follow up with questions.
like this
$('select').on('select2:select', function (evt){
$(this).blur();
});
$('body').on('change', 'select.m-select2', function () {
$(this).blur();
})
I am using Struts jQuery plugin. Problem is with <sj:tabbedpanel>.
I want to preselect the tab depending on the input while loading the page.
I know there is property selectedTab="1".
But I want it to change it while loading the page using jQuery.
In jQuery-UI plugin, there is function $("#tab").tabs('selected',2) which does that.
What is the similar function which does the same thing here.
Try this:
<sj:tabbedpanel id="tabbed" selectedTab="%{selected}"></sj:tabbedpanel>
selected should be a parameter, which decides the opened tab.
If you still wanna use jQuery, please check the api: jQuery Tabs API
here is the important part:
A series of events fire when interacting with a tabs interface:
tabsselect, tabsload, tabsshow (in that order)
tabsadd, tabsremove
tabsenable, tabsdisable
If you want to do this from javascript then use option to set selected tab.
$("#tab").tabs( "option", "selected", 2);
Hi I am using Struts2 and hibernate now in my jsp I have Two dropdown ,on selection of first drop it should call a function and retrive the values for second drop down from the database
Please help
Well you have number of options here and some of them are
user struts2-jquery plugin which comes with this feature where you can create two dependable select.
user simple jquery with JSON (struts2 plugin) and use ajax.
i will prefer second approach which is much more flexible.create a custom JS function with help from jquery and when use select first option from drop down call your action methods which will send JSON data based on the selected values and use JQuery build in JSON parsing mechanism to parse the content and fill second drop-down.
a simple Google search will give you a number of results.