Check If At Least 1 Checkbox Is Selected - Form Validation ?

May 9, 2009

I found something here, but I'm not good at javascript, and i don't know which part of the code is the right! I need only for Checkboxes!

[url]

I need something like: onclick="check_if_at_least_one_is_selected()"

There is only one <form></form> and all checkboxes are same type...

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How To Check A Checkbox Is Not Selected

Apr 29, 2010

<li>
<label><spring:message code="label.roles"/></label>
<form:checkbox path="roleIds" value="1" />

[code]....

Now what i want is to give an error message if any of checkbox is not selected , how can i do it Using jquery

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Jun 18, 2010

How can i check (from the parent) if a checkbox in an iframe is checked. Would this work?

$("#iframe").contents().find("input:checkbox").click(function() {

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JQuery :: Minimum Amount Of Checkbox Selected Validation

May 2, 2009

Trying to use jquery to validate that a minimum of 7 check boxes are selected.

The code is as follows:

It works if i set the (checked == 0) and then at least 1 is selected... but when i run it as is... it won't submit even if more than 7 are selected... Is my code wrong? is the variable checked not an integer?

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Checkbox Form Validation

May 3, 2006

I have a form liek this:

<form method="post" action="somefile.php">
<input type='checkbox' name='boxes[]' value='abc'> abc<br>
<input type='checkbox' name='boxes[]' value='def'> def<br>
<input type='checkbox' name='boxes[]' value='ghi'> ghi<br>
<input type="submit" value="Continue to Step 2..." name="s2"></p>
</form>

I want to make sure that people cannot continue without checking at least 1 checkbox. The name of the checkboxes will be same.

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Check Form - Won't Execute At All - The Form Doesn't Work - As Well As The Validation

Apr 26, 2010

I currently have a form named "survey". I found here a JavaScript to validate my form.

I am having serious issues with this script, either it won't execute at all (the form doesn't work, as well as the validation) or the form submits without validating the form.

Here is the current JavaScript I am using.

In the head section

Code:

Code:

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Form Still Submits Despite Of Validation Checkbox?

Sep 25, 2009

I have a form, on which I have multiple checkboxes and text fields.Now I want that the form can't submit untill at least 1 checkbox is selected or a text field is filled.But even with the javascript validation I already have the form still submits.Any help on this one?Here is the whole page on which the checkboxes, text fields and javascript validation are:PHP Code:

<scripttype="text/javascript"language="javascript">
functioncheckCheckBoxes(){
if(document.form2.nbs_vmb[].checked==false)

[code]....

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Form Validation -> Checkbox Array

Sep 19, 2006

<form name="new_page" action="test.php"><input type="checkbox" name="allowed[]" value="2">
<input type="checkbox" name="allowed[]" value="2">
<input type="checkbox" name="allowed[]" value="2">
<input class="button_140" type="button" value="Toevoegen"

if (!document.new_page.allowed[].checked){ popupalert('allowed'); }
else { this.form.submit(); }"></form>

This is a piece of the code I've written. It's supposed to check if one of the allowed[]-checkboxes is checked, and if not, to run function popupalert('allowed');. It's not working. Can someone tell me how to fix this?

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Form Validation - Dynamic Checkbox

Apr 20, 2007

I have a form which contains a number of check boxes in format of fielduse_x where x is incremented each time (1 - 30)

Everytime one of the checkboxes is ticked or unticked i want to perform a function for related boxes but i am having difficaulty doing this.

The code i have in the javascript is :

function changeStatus(f)
{
alert(f);
if(document.newForm.fielduse_[f].checked==true)
alert("YES")
else
alert("NO");
}

f is passed from the form field and contains the number (1 - 30). I know that the form is passing the values across as alert(f) gives the correct number. I don't seem to be able to get the next line to work. How do i put the value of f into the if statment as what i have done isn't working

if(document.newForm.fielduse_[f].checked==true)

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Form Validation For Checkbox Named As Array

Jul 24, 2005

I have a number of checkboxes and radio buttons in an HTML form that are named as arrays, ie.

<INPUT type="checkbox" ID="i1" VALUE="MILK" NAME="Q1[]">
<INPUT type="checkbox" ID="i2" VALUE="SUGAR" NAME="Q1[]">
<INPUT type="checkbox" ID="i3" VALUE="BISCUIT" NAME="Q1[]">

I need to keep the 'NAME' as an array as above because of the form processing that is used after submit.

I was really hoping to use Javascript to validate the form and make sure that each checkbox group has at least one option selected , but my javascript messes up because the 'NAME' is Q1[] as opposed to Q1. I had been using:

<script>
function validate() {
if (!(mainform.Q1[0].checked || mainform.Q1[1].checked|| mainform.Q1[2].checked)) {
alert('Please answer question 1.');
event.returnValue=false;
}}
</script>

but this only works when I name the checkboxes NAME="Q1". Is anyone aware of how to get the validate function to work (or another way of validating the form) even when the checkboxes and radio buttons are named like NAME="Q1[]".

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JQuery :: Enable Submit Button When Checkbox Selected On Form

Jun 14, 2009

This is my form, When user click the <b>YES and checked the check </b>box then only I want to enable the Prepay by Card button. For this situation, what is the jquery snippet. I have tried somthing like:
$("#SubmitCard").attr("disabled", "disabled");

But the thing is, I want to put the and Condition match. For this situation, I don't know how to write the jquery snippet
<table style="border: 0px solid rgb(0, 0, 0);
width: 485px; height: 45px;"><tbody>
<tr style="width: 20px; height: 5px;">
<td width="78">Pay by Card </td>
<td width="78"><b><span style="cursor: pointer;" id="yes">Yes</span></b></td>
<td style="cursor: pointer;" width="315"><span id="no" style="cursor: pointer;">No</span></td>
</tr> .....

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JS Multiple Validation Form Does Not Check

Apr 26, 2010

I don't know why it's not running the validation js first upon "submit", it goes straight to the "thankyou" page specified by the php (let me know if php needs to be posted). I've check my syntax over and over, I can't see anything.

I'm trying to have a "tell-a-friend" form where one requires to enter his/her first name, surname, email and a friend's email � with option of forward to to other 4 friends (total 5).

Here are the fields I need to validate:

My js (validationB.js) file:

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Aug 18, 2010

I have some problems with validating form in javascript.

I have a following HTML code:

What I want in validation is to check all the field in form (check for required fields etc). I want to show user error message in div tag with id='poruka'.

Part of code of function ValidirajFormu:

So, validation works OK, but message is not written in div tag. Only if all fields are correct, form is submited, but there are no error message.

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Jan 8, 2010

I am putting some validation on some forms at work. The users have asked to put something in place to make sure that if you enter something in on field that you must enter something in the corresponding field.

Example : Lets say there is a Company field and a Position field. Well they would like that if you enter a Company you should enter a Position and the other way where if you enter a Position you just enter a Company.

Ok so thats easy enough I did something like the following.

if((form.Company1.value=="") && !(form.Position1.value=="")){
alert("Enter a Company into the Company field for row 1 or enter N/A");
form.Company1.focus();
return false;
}

Well now they want a message box to give the user the option it ignore that they have a blank field, and more or less want a �hey just to let you know, you didn�t put anything here

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Jan 26, 2010

How can i check if file form field has file selected or is empty?[code]...

is this ok or is there a better way?

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May 24, 2010

What I want to do is to check if the selected date in a form textbox is less than today in which case an error message should be displayed. I tried to write the code myself, but unfortunatelly I miss something.Here are th lines:

Code:
function dateValidation()
{
var obj = book.dc1.value;
var day = obj.value.split("/")[0];
var month = obj.value.split("/")[1];

[Code]...

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Jan 12, 2011

I already have the remote check working and it works fine. But the catch is that I want to allow submission even if my check returns false.

All I really want is to show a warning if the remote check returns false.

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Mar 1, 2010

I have an issue with a form I am creating, I have many check boxs where at least one of the 2 needs to be selected and the final one has to be selected for the submit button to become active

This is the javascript I have atm to do this:

I cant seem to get this to work, forgetting about the 3rd checkbox for now

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Mar 19, 2010

I am using this code to validate a form to check that only numbers have been entered but when I enter alphabets the javascript raises an error but still submits the form.

<script type='text/javascript'>
function isNumeric(elem, helperMsg){
var numericExpression = /^[0-9]+$/;
if(elem.value.match(numericExpression)){
return true;
}else{
alert(helperMsg);
elem.focus();
return false;
}}
</script>
<form>
Numbers Only: <input type='text' id='numbers' action= "desktop.html"/>
<input type='button'
onclick="isNumeric(document.getElementById('numbers'), 'Numbers Only Please')"
value='Check Field' />
</form>

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Apr 7, 2010

Does anybody know how i check to see if the radio button is select and also can anybody tell me how i can check for an email in the correct format the function isValidEmail in the above alows emails to pass through.

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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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May 30, 2010

I'm using the following javascript code to validate a form:

My HTML code is as follow:

The fact that my using xhtml strict I'm having an error when validating my html file. Can't use name attribute in form.

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Jul 24, 2009

I have this form validation code

function check_email(mailstring)
{
valid = "1234567890qwertyuiop[]asdfghjklzxcvbnm.@-_QWERTYUIOPASDFGHJKLZXCVBNM";
for(i=0; i < mailstring.length ;i++)

[Code]....

at the moment its checks that someting has been enetered in all these fields,

what would be the best way to check that the email or phone nummber had been entered?? will not send if nothing enetered, but will send if one or both have been enetered?

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Feb 14, 2011

So the following code hides/shows fields in a form when radio buttons are clicked, the problem is on the same form I have a checkbox and when said check box is selected the showing and hiding of the fields doesn't work.

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">[code]...........

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I have a form and trying to validate all fields with jquery validation plugin.Every thing is fine except the checkboxes which i create dynamically.[code]how i make a rule which check that if no check box is checked then show error message like above input fileds do.

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