JQuery :: Null - Undefined - Empty - Drop Down Option Is Selected In A Drop Down List ?

Oct 25, 2011

I am asking jQuery to tell me which drop down option is selected in a drop down list - like this:

I would like to check if this was successful before I proceed. What are the possible return values for this statement?

If no id exists.
If no option is selected.
If some other problem occurred.

In these cases am I expecting a null return; an undefined return, a false return value?

And, based upon the complete set of return possibilities, what would be the best and most comprehensive tests I could apply to cover every base.

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JQuery :: Getting Selected Option From A Complex Drop Down List?

Oct 20, 2011

I am having trouble getting the selected option in a list of more than 20 items in sharepoint, The code below works for lists of 20 or less but not for lists of greater than 20. If any one has a snipet of code that will enable me to set a variable with the selected value from a complex dropdown it

[Code]...

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Removechild - Create A Drop Down List Which Depend To The Value Selected From The Previous Drop Down List

Jul 28, 2010

I am trying to create a drop down list which depend to the value selected from the previous drop down list. I can add it without problem, but If I change again the value of the first drop down list I would like to remove the previous drop down list generated from the first value. If I try to remove it when I create the element, it even does not create the element, the remove element function seems to work because when you click on the remove link it works.

[Code]...

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JQuery :: Set Option As Selected In A Select Drop Down?

Nov 3, 2011

I have a select control that has over 400<option></option>. To cut down on the user having to scroll through all 400 options I have included a text control that acts as a "Quick Index" and with each char entered into the text box the options are narowed. The problem I am having isthe once I have determined which option should be selected, how to set the option to value of "selected"

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JQuery :: Limit If A Value Can Be Selected In A Drop Down List (select) Based On Other List

Jun 9, 2009

I have a page that displays a list of people playing in a tournament. I need to be able to generate a Leaderboard based on which players are manually selected by the admin. Next to each person there is a drop-down list. An admin can go in and select a "slot" that a player should be in on the leader board from 1 to 8, or leave it blank if none. What I need to figure out how to do is the following, when a change event happens on a drop-down list, and say the value 5 is selected, I need to check to make sure that 5 is not already selected in one of the other players drop-down lists, in other words, that the 5th leaderboard slot is not already full. if it is, display an error message and make them change that one first. how to do that with jQuery? I'm thinking it will have something to do with the each() function, but not sure exactly how the logic should work.

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Add A Selected Option To A Drop Down Menu?

Mar 10, 2010

I have a javascript adding new options to a drop down select menu getting the information from the database.[code]...

I want one of them to be added as selected. I will put an "if" check and if it the value of the option and the value in the database is equal I want that option to be added as "selected".

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Changing Selected Option In Drop Down Menu?

Apr 2, 2009

Suppose I have this drop down menu: <select>
<option selected>Milk</option>
<option>Coffee</option>
<option>Tea</option>
</select>

How can I change the default (selected option) from Milk to Tea dynamically?

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How To Show Amounts In Drop-down Based On Selected Option?

Nov 26, 2006

Does anyone know of a Javascript that will show an amount in a drop down based on what was selected in the previous drop down? Example: Code:

<select id="car">
<option value="volvo">Volvo</option>
<option value="audi">Audi</option>
</select>

<select id="price">
<option value="">Please select</option>
<!-- show this if volvo -->
<optgroup id="vol">
<option value="30000">30000</option>
<option value="31000">31000</option>
</optgroup>
<!-- show this if audi -->
<optgroup id="aud">
<option value="40000">40000</option>
<option value="41000">41000</option>
</optgroup>
</select>

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Two Drop Down Menu's One Hidden, Appears If Right Option Is Selected

Jun 5, 2007

I have a html form with two drop down menu's. Now what i need is if some one selects a certain option in the first drop down menu then it will show the second one, Otherwise it stays hidden.

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JQuery :: Use A Selected Value Of A Drop Down List Box And Control The Appearance Of The Page?

Jun 29, 2011

The page I am building has 4 columns on it and I want the selected value ofa drop down list box to control the number of columns that appear on the page.

[Code]...

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Select An Option In A Drop Down List With Only Value Attribute?

Apr 20, 2010

If i have a drop down list on my website, and i want to use javascript to change its selected value,however, i do not have the id/name attribute of the option i want to select, only have the "value" attribute of the option, can it be done?

<select name="category">
<option value="">No Preference</option>
<option value="Apples">Apples</option>
<option value="Oranges">Oranges</option>
<option value="Pears">Pears</option>
<option value="Banana">Banana</option>
</select>

I imagine somehow.. selecting the options and looping through them and match the value. Really new to javascript,

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Passing Drop Down List Selected Value

Jul 20, 2005

There is a drop down list on my Web page with various values to be
selected by the user. Once the user has selected a value, he/she clicks
on the submit button. When he/she does that I would like 2 things to
happen: the selected value of the drop down list is passed to another
html page which opens in a new brower window open.

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Make A List Menu Appear When I Select An Option From A Drop Down?

Jul 9, 2010

How can I make a list menu appear when I select an option from a drop down list or menu?

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Drop Down List Onclick Option An Input Textfield Appears

Jun 27, 2010

On a drop down list, on click of an option an input textfield appears. e.g.

echo "<select>
<option>What is your opinion on</option>
</select>";
echo "<div id='pop'><input type='hidden' id='opinion' size='20' name='opinion' value='Type Keyword Here' /></div>";

i want it to be hidden and then appear on click of the option in the dropdown list.

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Change A Drop Down Based On What Is Selected In A Seperate Drop Down?

Jun 26, 2006

I've got 2 drop down select lists. The first one would have something like

-Category 1
-Category 2
-Category 3

Then what I'd like to happen is when you select one of those categories the next drop-down below it loads something like

--Sub Category 1
--Sub Category 2
--Sub Category 3

Any idea how I'd pull that off?

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How To Hide/show The Rows Of A Table Depending On The Value Selected By A User From A Drop Down List??

Feb 15, 2006

I am maintaining a site which is written in ASP. Now i have to create
some new pages.

In one page we have a table with many rows. Now, I want to enable or
disable(showing and hiding also) 2 rows of this table depending upon
the value selected by the user from a drop down list.

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Drop Drop Menu With Other Option?

Jan 4, 2011

I am looking to put a drop down menu in my for i have the drop down set up but i am not sure how to do the make hidden text field pop up when "Other" is selected. I am guessing you use javascript to make this happen

HTML Code:
<td><select name="actionrequest" onchange="Select(this,'budget',1);">
<option value="Calibration">Calibration</option>
<option value="calibration and repair">Calibration and Repair</option>
<option value="repair">Repair</option>

[Code]...

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Test For An Empty Drop Down Box?

May 6, 2009

This piece of code is throwing an error on I.E. 7, its because the drop down box is empty, can anybody advise me how to deal with it?

Code:
var category = sel.options[sel.selectedIndex].value;
if(category.length>0){

[code]....

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Drop Down List - Each Select Drop Down Should Not Allow The User To Select The Same Language Again

Feb 25, 2010

iam trying to use 5 drop downs in my form for user to select languages and each select drop down should not allow the user to select the same language again and all my drop downs are populating individually from the DB on the page so if "English" is selected for "dropdown 1" then again "drop down 2" should not allow "English" to be selected.

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JQuery :: Getting Selected Value From Drop-down?

Mar 30, 2009

grab the selected value from a drop-down. The alert just shows an empty message. At least it is not showing undefined (as it was for my other attempts - you can see what these were from the commented out code), but I would expect it to display one of the values One-way, Reciprocal or Other. Perhaps I have to do some conversion on the result.

In my HTML I have:

<select name="dllViewSelector"
onchange="showSelectedView(this, allViews, allSections,4,10)">
<option id="oneway_4" value="one" selected="selected">One-
way</option>

[Code].....

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JQuery :: ReplaceWith For An Option With A Value For A Drop Down Menu?

Mar 31, 2011

I'm trying to remove an option in a dropdown menu so it's default is not Select. I'm using jquery-latest.js.This is the html:

<tbody>
<tr>
<td class="column_main" align="center"><b>Size</b><br>[code].....

It doesn't seem to be working. When I do it without an attribute it replaces the lot of options which isn't what I'm after.

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JQuery :: Use It To Select And Option From A Drop Down Menu?

Apr 4, 2011

How can I do this with jquery. I tried this- code...

And it successfully added "selected" to the correct item. But it wasn't actually selected. How can I do this correctly?

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JQuery :: Selecting Active Drop-down Option By Category?

Jan 4, 2012

I'm trying to set an option of a drop-down as active, regarding the category. I added the category name for this to the body class="category-XXXX-XXXX". What I need is something like an array to say:

if == category-AAAA-AAAA then option value=1 is selected
if == category-BBBB-BBBB then option value=2 is selected
if == category-CCCC-CCCC then option value=3 is selected

and so on. Unfortunately, I'm getting totally confused where to actually start and how to do that. I know, it is for sure out a line to ask for a finished script, but I'm sure someone can give me a hint, on how to do that.

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JQuery :: Find Out The Previously Selected Option Value In A Select List?

Feb 20, 2011

How to find out the previously selected option value in a select list?

For example: I have a list with 3 options

<select id="test">
<option value="1">Option 1</option>
<option value="2">Option 2</option>
<option value="3">Option 3</option>
</select>

When user select, for example, option 3, how can i find which was the previously selected option? etc... I've found some javascript example that evaluate "previousIndex" property of the select element but it doesn't work at all

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Move Value "Saleman" From Drop-menu 1 And Value "Billy" From Drop-down 2 To A List Box?

Oct 26, 2009

I'm completely new to javascript. I want to use dreamweaver with javascript to do a litter project in which I want to move value "Saleman" from drop-menu 1 and value "Billy" from drop-down 2 to a list box. The result should be as follows:

dropdown 1
Manager
Salesman (to be selected)
Cleaner

[Code]....

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JQuery :: Set Drop Down List Value?

Jun 12, 2010

The last two lines of the following code is not setting the value of the selector unless i debug it within firebug. when I set a breakpoint on those two lines it shows the val in the parentheses and it will set them correctly, but if I do not debug the script then it doesn't set them.

populateLists: function(executionLevel, contractor, program) {
var _chart = this;
$.each($('select#contractor option'), function() {
if ($(this).val() != "all") {

[Code].....

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