Javascript Option/Select Box Validation?
May 29, 2002
Is it possible to check an option/select box to see if it still has data in it? I'd like to be able to stop a user from updating a file IF the field they are copying from still has content in it. I.e.
BOX 1 BOX 2
1 3
4
6
2
5
So the button will display an error message (e.g. you aint sent the entire lot over)
I've tried to attempt it but my mind cannot really handle anything more than (Check kettle for water, IF water equal or less than 1 cup full, then fill kettle with water, If kettle equal to or greater than 3 then STOP).
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Mar 23, 2011
I have a form and I have gotten all of my error checking to work except for this. I use an <select><option> list for a states dropdown. the 1st option is blank <option></option> I have not been able to successfully check for errors (no option selected) it either always gives and error using if(state==null), or never gives an error state=="" or " " this is the only dropdown on this form so I didnt notice the problem until I had gone through all the more difficult error checking, and somehow I cant get this one seemingly simple thing figured out
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Jan 20, 2006
i tried to create a dropdown menu and use the option as a control to
change content inside another text area
the code is like this:
<select name="xxxx"><option onclick="changeunitprice(29.87)"
value="1744"/>
the function changeunitprice() is called when an option is selected
problem is it works well with firefox but not IE
any ideas? or is there anyway can make same effect in IE?
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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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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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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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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 12, 2009
I have a select box with and onchange event to get the data from serever, <SELECT name="States" id="State" onchange="getData(this.value)" > Now i want to validate that if no value is selected from the above list, then it should not send the ajax request. How can i apply the Jquery validation plugin here?
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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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Apr 2, 2003
How can I automatically select the next option from a select box? I would like a next button to scroll through the options.....
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Jul 7, 2011
If I select "Other", a text box pops up and I can type in something and hit Add Item and it will add it to the drop down box, but the selection will stay at "Other". How do I make it select the item I just added?
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Jun 30, 2007
I am having a problem with a simple javascript validation routine for a drop-down list, which works fine when there is only one form on the web page, but breaks when another form is added. I am new to javascript, so I expect this is a simple error in syntax.
When there was only one form on the page: Code:
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Mar 21, 2008
I have a form that displays data from a database table, and makes some of the fields text boxes, so the user can edit them. These text boxes are required fields. But if the user deletes the text and then tabs out of it, the "required" error message does not come up, until some other validation is done or the form is submitted. How can I make the "required" error message appear immediately?
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May 19, 2009
[Code]...
my only issue is whenever 1st time it checks the record if found record it display message Record Found but whenever i try to change my textbox value it still gives me this message. it does not get reset if record not found.
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Jun 11, 2009
I would like to wrap validation messages in <li class="error"/> with validate plugin is there any event or option I can handle to tweak the element before it is appended? I'm unsure if something like that would look ok:
$('form').validate({wrapper:"li.error"});
or either
$('form').validate({wrapper:"<li class='error'/>"});
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Feb 14, 2011
I have a form set up and I need to set the validation so if one option is selected from a picklist, they need to complete a text field as well.
This is the code i'm using:
Code:
Reason is a picklist, I want it to show the alert when option 1 from the picklist is selected and no text is in the Row_Number field.
If any of the other options are selected, I want to make sure the Row_Number field is blank.
As I said, I'm sure this is a very simple thing, but I been working on it for ages, and cannot get it to work, I get the alert every time the Row_Number field is blank.
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Jun 1, 2010
I'm looking to accomplish in the Form when user select "others" from the select options , want pop up java windows user to field in the information.
here there simple form code
<form>
<select>
<option value="others">Others</option>
</select>
The field to ask where do you hear about us? I have list of options in there but when the user select "others" i want to input filed popup and want user to filed in the info.
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Jul 23, 2005
I have a problem with the following code, when run on IE6 the value for
opt_sel is null but on Mozilla or konqueror the value is the option
selected (as expected). I have tried several books on the matter(and
google), but they seem to indicate that what i am trying to do should
work.. Code:
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Mar 17, 2007
in my SELECT (like below), the option value has 2 values, separated with
comma ","
<select name="sIdName">
<option value="10,John">John</option>
<option value="11,Eva">Eva</option>
<option value="22,Danny">Danny</option>
</select>
How can I read these two values individually from Javascript statement ?
like one is 10, another one is John
i.e document.form.option[document.form.selectedIndex].value?
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Apr 10, 2009
I'm having two Slecet Option inputs. When both are chosen i want to compare the two make sure they ar ethe same. Its for confirmation purposes.How would i get the value of a selected option. (I don't know which option is chosen, I don't know the id of the option, i dont know the value of the option. I just now the id n name of the select)
<select name="whatever">
{Loop here to output many options}
</select>
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Oct 18, 2006
Given a drop down list such as:
<SELECT NAME=sections >
<OPTION>Merge</OPTION>
<OPTION>Nuke</OPTION>
<OPTION>Merge & Nuke</OPTION>
</SELECT>
If one selects Merge, then i want another form displayed with input fileds etc, but if one select Nuke then a different form will be displayed and if one selects the last option then both above forms will be displayed. Can anyone show me a script (i.e. javascript) that does just that or care for a example?
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Jul 23, 2005
How do i select an option in a combo box? i have tried looking on the internet but dont really know what i should be searching for. what i want to happen is that when a function is called
a line of code will select a specific option in a combo box. something like:
//excuse the dodgy syntax
function select_combo() {
cb_1.select[3] //where option 3 will be selected (or 4 if first index
is 0)
}
the combo box would be something like:
<select>
<option>First</option>
<option>Second</option>
<option>Third</option>
</select>
The function would change the selection in the combo box.
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Jul 23, 2005
Hi!, I want to fix via javascript the combo width to a fix value. I'd like to implement a kind of ALT / TITLE function to show the entire option when the text is longer than the combo width...
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Mar 11, 2006
In the code below I want to alert the selected option of select.
In Mozilla the code works (If I choose "3" alerts it).
In IE alerts: nothing appear
---------------------
<script>
function hi() {
d = document.getElementById("day").value;
alert(d);
}
</script>
<select id=day onchange="hi();">
<option>0
<option>1
<option>2
<option>3
<option>4
</select>
---------------------
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Sep 12, 2006
if I have a select with more options,
how I can know if is there an option selected;
is necessary a cycle? or is there an inner property?
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