JQuery :: Add Select Options Only If Option Doesn't Already Exist
Jul 22, 2010
I have two multiple selects on my page. One gets updated via ajax whenever the user filters data (we'll call that select "#select-1"), when they select options from that it then gets moved into the other select (we'll call that "#select-2"). That is all working fine but I'd like to refine it so that they can't select the same data twice.
So, basically, what I'd like to do is add logic within the ajax call to only update the select options in (#select-1) if it does NOT exist in the other select (#select-2).
I have no clue where to even begin with this....do I need to store the val's in an array and then search for each one in the other?
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May 9, 2011
I have a menu that I have constructed through HTML/CSS/JavaScript. Javascript handles the mouseover and mouseout events to set the background of the menu item/table element with an image. It works great. What my issue is right now is that when the user loads the Home page, I want that to have the background of the item already set. I had a function to do this with a switch clause in a separate javascript file. This function was called immediately (left it outside of any functions so it would execute first). But I'm getting an error because the actual element (a table) to set the background doesn't exist yet.
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Aug 29, 2009
Tried doing this a few different ways but it seems no matter what I do the last option won't remove for some reason.. if it's the only option, it won't remove either. as it's the last one.code...
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Apr 8, 2009
I want in the select option a standard word, for example: select name.But when I add a line of option just after the first select (bold text), that line takes the first record of the database, but it should be a blank line (nothing linked to it, just a reminder to select a name).This is the code I have now:
<script>
function setVal()
{
[code]....
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Jun 21, 2010
I'm using the following code to remove an option from a select control based on a selection in a different select control and the option text in the select option that is being removed. The code works as I want it to, but I would prefer to use the option value for identifying the option to remove instead of using the option text. I've tried several different ways to do this, but can not find the proper syntax.
[Code]...
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Jun 2, 2010
I have 2 html-selects, one as source, the other as target. I want to copy the source-options to the target.
#sel_rel > source
#sel_new_after_rel > target
function openFormAddRel(){
generateFieldset("Release hinzufügen", "reg_edit", "form_add_rel");
[Code]....
While appending the option-elements to the targetselect the original option-elements disappear (exactly at step of line 13). This is unwanted behaviour.
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Feb 9, 2009
I have an array of codes returned from a script which relate to select box options. How can I select multiple select options so I can disable them?
So far this isn't working for me...
Code:
for ( var c in codes )
{
$('option[value="' + codes[c] + '"').attr('disabled', 'disabled');
}
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Aug 11, 2010
According to [URL] intended way for jQuery to change dynamically the selected option of a dropdown select control isassigningthe desired text instead of the value. I found this way veryinconvenient (data structures usually deal with value codes, not value descriptions) and it seems to work only sometimes.
Trying different options I came out with this approach that seems to do the job so
far:
function setSelect(pID,pSelectedValue)
{
$('#'+pID + ' option:selected').removeAttr('selected');
[Code]....
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Mar 20, 2010
I've been having problems getting my select option to change the options of another select option. I'm not much of a javacsript coder, so I'm at a lost.When I select the first option nothing appears in the second option.
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Aug 2, 2009
Is it possible to reorder the options in a form select box with jQuery, either by drag and drop or by up and down arrows/controls?I have a form select field that users use to choose an item to edit. I'd like users to also be able to reorder items in the select box to change their display order.In the end, I'll likely send order changes to the server via AJAX.
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Jun 14, 2009
i need to remove some options from a <select> but i need to get it by name
so i have
<select name="imageList">
<option>test1</option>
<option>test2</option>
<option>test3</option>
<option>test4</option>
<option>test5</option>
<option>test6</option>
i know i need to use the .removeOption("test4"); to remove it but i dont know what to use so it selects the imageList <select>
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Jun 17, 2010
I currently have a form that the checkboxes are automatically populated. There is over 1000 checkboxes in total, 48 of these checkboxes are designed as main topics, when the checkbox for one of these 48 are ticked, it checks all sub catergory checkboxes as well as populates a <select><option> multiple list with its value. When unchecking one of the 48, it unchecks all its sub categories and removes them from the <select><option> multiple list.
The problem I am having is, when i select one of the 48, which populates the multiple list option and checks all sub categories... i go to uncheck one in the sub categories, which successfully unchecks the main category (as it indicates they are not all selected). It also successfully removes the sub category from the multiple select option list and its main category (which became unchecked).
When I go back to check the main category which makes all the sub categories checked... it re-populates the <select><option> multiple list with the values creating duplicates. I need a proper way of when I check a box, it scans the multiple <select><option> list to see if it already exists, then adds it again if it is not there. I have tried the following jquery:
$('#elemSelect option[value = thisCheckbox.value]').length > 0)
but it seems the length always comes out 0 (zero). I need a fast and efficient way of doing this there is over a 1000 checkboxes that can be checked and need to populate this list.
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Oct 12, 2009
I have a form that uses jeditable to edit-in-place several fields and select boxes. Everything is working great. Now I need to a way to add a new option to the select list. What I would like is the user select "Add New..." from the select list that would pop-up a dialog window where several fields are filled in. When the form is saved the select field is updated with the new ID and description. I use Facebox for pop-up windows to display notes when the user clicks on a topic. I know Facebox can be used to display a form. It would be ideal to use this ability when creating a new option for the select box.
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Jan 10, 2012
With CSS this is not browser save at all, so I wonder if this could be done with jquery.
[URL]
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Apr 26, 2009
I'm not sure if my term usage is correct, but using a select form field with various options. I would like that when an option is selected, a php query is performed, and the rest of the form is updated according to the selection based query.
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Dec 18, 2011
Multi values in select options. I have a simple select drop down menu here with values for each option that I can capture with Jquery.[URL]...
Code:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
[Code]...
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Dec 4, 2011
I'm trying to hide a few options in a dropdown box using .hide(). This works perfectly fine in firefox and chrome, but it doesn't work in IE and Safari. My original code is more complex but I've narrowed it down to this.I've tried several combinations and nothing has worked.hide() works, but not for things within option tags for some reason.[code]
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May 28, 2010
I have a long form in a tabbed interface, where I want to count the non blank fields on each tab (the form fields are text and checkbox inputs and multi & single select fields). The counting function is as follows:
// Input argument is a tab object
function
countFieldsOnTab(obj){
var counttext = obj.find('input:text[value!=""]').length;
[Code].....
The counts of text, checkbox and multi-select fields works, but the single select count doesn't return what I want. The default option in single selects is a default where the value is blank "<option value="">-- make a selection -- </option>. These will be found as selected options.
How do I count only those options have have a non-blank selection?
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Jun 16, 2010
I am populating a number of Select boxes on the server-side with a large number of options. I'd like to get the response size down without taxing the client browser too much. What do you think is the most efficient way to approach this problem?
Here are some considerations: The option text/values do not change very often, but could potentially change in the future. The page that holds the select boxes should never be cached, there are other aspects of the page that need to remain fresh. Firebug with YSlow is saying that the primed cache size of the page is 300Kb with all the select dropdowns and options, if I remove the options, the primed cache size of the page is 80Kb. I am considering breaking out the text/value pairs for the select boxes into a separate file that is cache-able calling it "valueTextPairs.js" and referencing it with a query string and some sort of server-generated MD5 hash of the data, so that if any of the values change, the client's cached version will be replaced by the latest version. Like so:[URL]...
Provided I do this, I anticipate that the primed cache size of the page will be reduced down to 80Kb (which I like) -- however, before I take the plunge, I am curious what you all think the performance effect will be?
I know the number of bytes on the wire will be reduced, but will this put a lot of additional pressure on the client's browser because I'd need to traverse the name/value pairs and add the options to the select boxes dynamically on the client end? If it seems reasonable to do this, what jQuery approach would be the most efficient? $('#selectId').html(options) with options = one big string? Adding each child option to the select in a loop? Something else?
Some client end folks are using IE6 so I am trying to tax the browser as little as possible, while also reducing the size of each request, trying to find a happy medium..
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Apr 16, 2010
Since its not multiple its not going to show all the 3 options selected, so I created a little button with the easy statement in JQuery it is working, it makes the Select Multiple, it expands the Select and make the items selectable, but on the other hand it does not show the already selected options.
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Apr 8, 2010
How do you folks handle <select> lists with no default option selected? I have mocked up a simple sample but in reality I may have a dozen different categories. (Link:Do you disable all other hidden <select> elements so that their values are not sent in a POST request?
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Oct 26, 2005
I wish to know if is possible to change the selected option in a SELECT selecting a determined option into another SELECT in the same form.
E.g: When I select the option "Istruction" in the SELECT named "A" I wish the SELECT "B" change the default state from "empty" to "other"
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Jun 21, 2006
I'm using Prototype and scriptaculous either, but here it is:
I have two select areas and scripts to transfer items between the two.
Everything works great in FF, but in IE when an option gets removed it
removes the entire select area. Has anyone ever seen something like
this before?
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Feb 25, 2009
if i have a <select> and i when i click an image i want to do an onclick event to select a specified option inside the <select> is this possible?
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Jul 22, 2011
I'm iterating through each option of a select, and I need to selectively remove some options based on their value. Here's a sample option (I don't control the markup)
<OPTION selected value=7>Compliance</OPTION>
$("select[title='MyTitle'] > OPTION").filter(function(){
var v=$(this).attr['value'];
//other stuff
[Code].....
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Sep 20, 2010
I've build a module in jQuery that converts a normal select box to a nice stylized list.When I click the anchor tag, it drops down the list with some JS. What I can't figure out is how to implement the keyboard. For example, if I wanted to drop down in the list, I could start typing.Could someone lead me in the right direction?I can't quite figure out what to google for.
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