Form Array Checkbox Accesing

Feb 21, 2005

First I'm sure the answer to ths JS question is buried somewhere in the many item of this forum. Just could not find it. So I'm working on changes to a form developed by someone else. In the form the previous developer wrote the following:

<input type="checkbox" name="method[]" value="payroll_onetime">Payroll
<input type="checkbox" name="method[]" value="payroll_onetime">One-time
<input type="checkbox" name="method[]" value="paper">Paper Check
<input type="checkbox" name="method[]" "onlinebill">Online Bill

Note there are other form and HTML I removed.

So my problem is this. I'm trying to access the method checkbox array from a JS function. So I write:

function setPayrollStatus()
{
alert(document.profile.method.length);
}

This does give me that value of 4. Since there are 4 checkboxes for method I'm thinking this is correct. So next I add:

for (var idx=0; idx < document.profile.method.length; idx++)
{
alert(document.profile.method[idx].checked);
}

Now I get only 'undefined'.

What I want to accomplish is to check the first item. I thought I would be able to write something like: document.profile. method[0].checked = true;

If I change the form name tags from 'method[]' to 'method' it works. Problem is he also wrote the php back end processing for this form. And in PHP this syntax yeilds an array for the method vriable.

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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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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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Array Within Form - Just Run It Once With Two Html Input Checkbox Elements

Jan 27, 2011

For some reason my script only works when I have at lease two checkboxes. To simulate the problem just run it once with two html input checkbox elements

-> check one checkbox and press submit -> it works
-> Now remove one input checkbox field and check the remaining checkbox & submit -> Bamm doesn't work...

[Code]....

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Feb 26, 2006

All right I have a javascript that parses my .xml files and writes the contents to individual elements in my page via the innerHTML method. That is okay for one page but what if I want to have all my pages in one xml file? Ex. I have a page called home.xml that has all the content for the home page. Another xml file for an About us page in about_us.xml and etc. What if I didn't want to have them in seperate files but in one xml file called site.xml? How would I tell my javascript which to node(?) to use. I tried things like changing firstChild to secondChild and so forth. I thought that if i was to change that index value from 0 to 1 that, that would do it for me but it didn't. I gave each page an id attribute but didn't know how to access it. Code:

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I'm trying to access an XML file, but it doesn't seem to work, this is an example of the XML:

<?xml version="1.0" encoding="ISO-8859-1"?>
<pics>
<pic>
<autor>rtteewt</autor>
<desc>trhtrhtreherhetrhhrh</desc>

[Code]...

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Click One Checkbox Will Submit Only One Checkbox Value (not The Whole Form)

Feb 23, 2010

My JSP web page has many checkboxes. What is web page source code look like when clicking one checkbox will submit only one checkbox value (not the whole form) immediately? i.e. toggling one checkbox will send the info that only that checkbox is toggled. This does not work because clicking one checkbox will send the whole page

<form name="myform" method="post">
<input type="checkbox" name="choice" value="1" onclick="submit();">
<input type="checkbox" name="choice" value="2" onclick="submit();">
<input type="checkbox" name="choice" value="3" onclick="submit();">
...

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Click One Checkbox Will Submit Only One Checkbox Value (not Whole Form)

Feb 23, 2010

My JSP web page has many checkboxes.What is web page source code look like when clicking one checkbox will submit only one checkbox value (not the whole form) immediately? i.e. toggling one checkbox will send the info that only that checkbox is toggled.This does not work because clicking one checkbox will send the whole page [code]

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Jan 22, 2004

I have a script where checkboxes are created dynamically and I want to make sure the user have selected at least two options. I found this script which works fine, but it only checks if at least one checkbox is selected. How can I modify it so it has to be at least two? Code:

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Mar 31, 2009

I am working with a checkbox array where the key is already set. So instead of being able to use name="name[]", I need to use name="name[0]" etc.. I would like a button or a checkbox to select all in the array(name).

The main reason for this is the nature of the checkbox. If a checkbox is not selected then it is completely skipped when looping through the array. To overcome this I added a hidden field of the same name which will assign a value even if the checkbox is not selected. Then the problem of using name[] arises.

The form is populated with hundreds of entries using PHP so I am looking for a way to loop through them all.

Here's a tiny snippet of HTML of how my form is set up.

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Jun 11, 2010

I am using PHP to generate a page with a list of checkbox's on it. Then I am using JavaScript to validate that the user has selected at lest 1 of the given box's before I do a post back. But I cannot get my Javascript to see my CheckBox Array.

Here is my PHP code used to build to Checkbox list.
while ($row = mysql_fetch_array($data, MYSQL_ASSOC))
{
if(is_null($row['Team_Number']))
{
$str1 = sprintf('<input type="checkbox" name='People' value="%s">',$row['Member_ID']);
}
else if($row['Team_Number'] == $_REQUEST['T'])
{
str1 = sprintf('<input type="checkbox" name='People' value="%s" checked>',$row['Member_ID']);
} .....

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Dec 10, 2010

I've tried Googling this, but haven't found anything, yet.If I have an array of checkboxes, and each checkbox calls the same function with onClick, is there a way to indicate to the function which checkbox within the array called the function?

Code:

<input type="checkbox" name="thisCheck" onClick="myFunction();" value="ALL" />
<input type="checkbox" name="thisCheck" onClick="myFunction();" value="abc" />
<input type="checkbox" name="thisCheck" onClick="myFunction();" value="def" />
<input type="checkbox" name="thisCheck" onClick="myFunction();" value="ghi" />

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Sep 28, 2011

I've got a radio group and a checkbox array on my page. An alert pops up if none of the radios (in the group 'test') are check but I also need an alert if no checkboxes (within the array box[] ) are selected? Anyone know how I validate the checkboxes so at least 1 has to be selected?

[Code]...

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Oct 25, 2011

I have a php page that names checkboxes in a form chkwhatever# and increments the number depending on how many items there will be. In my javascript i want to be able to check to see if any of the checkboxes are checked but I cant use document.name.chkbox+#.checked. Should I create an array with the checkbox names? Not sure how to go about this.

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Jan 19, 2011

I want to randomly select one item from all those that are checked in a list of checkboxes. The checkboxes all have the same name, "members". I think my problem is creating the new array of names - only those that are checked - from which to randomly select the single item. Based on the below, if I select the top and bottom items, I get something like: Joe,,,,,,,,,Bob as my array output for checkednames code...

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In a form, I have multiple checkboxes which represent products whose values are the product prices and names are the product names. When a user clicks submit the next page processes it for cart/purchase purposes.

I need to pass the names of each checkbox to the next page as an array, and it seemed the best way to accomplish this would be to have a hidden input which automatically generates that array in the page then gets passed to the next (via POST) so the application can manipulate the data.

My server-side language is PHP on Codeigniter.

Here's the 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>

[Code].....

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I am working on a page where the user will select a location from a dynamically generated dropdown list. I was able to create the php multidimensional array (tested and working) from a MySql database using the users information at login, but I'm having problems converting it to a javascript multidimensional array. I need to be able to access variables that I can pass to a number of text fields within an html form.For instance, if a user belongs to a company with multiple addresses, I need to be able to let them select the address they need to prepopulate specific text fields.

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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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Mar 12, 2010

I have an HTML form with checkboxes. I want to add a text box that allows the user to type a string, then click "add", and then a new checkbox will appear at the bottom of the form. For example if my form looks like this:

[] A
[] B
[] C

and the user types "D" then clicks the {add} button, then the page will change to look like this:

[Code]...

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May 15, 2010

I need to validate a TOS checkbox on a form that has other non-required checkboxes. I am trying to use a bit of javascript described in this thread:

[URL]

The follow code I have in the <HEAD> section is this:

Code:
<SCRIPT language=JavaScript>
function checkCheckbox (f,name,require) {
var checked = 0, e, i = 0
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[Code].....

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Dec 12, 2011

I want to create a checkbox on a form that, when checked, will display a text field for someone to enter text into. If the box isn't checked, though, the text field should not be displayed.

How do I do this?

Oh also, it will probably use document.getElementByID(), because that is what we're learning about

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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:

<script type="text/javascript" language="javascript">
function checkCheckBoxes() {
if (document.form2.nbs_vmb[].checked == false)

[code]....

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Oct 6, 2005

I would like to have a checkbox and text box beside each other in a form. The text box would be greyed out and no info can be entered UNTIL the checkbox is checked. Once the checkbox is checked the text box becomes active and numbers then can be entered.

Can this be done with javascript? If not what are my options?

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Jul 6, 2006

I've got the following code being used to make a checkbox selected and readonly when a radio button value is selected:

document.myForm.valueName.checked = true;
document.myForm.valueName.disabled = true;

However when submitting the form values in email, the value of the checkbox won't submit with the checkbox value being disabled (if I comment out that second line, it works). Of course, I don't want the value able to be unselected.

Any suggestions? Can I make it readonly instead?

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Apr 15, 2009

I am trying to display/hide different div tags when a checkbox is checked and when a California is selected as a drop-down value. I have it working when the check-box is selected and choosing the drop-down value, but not when the drop-down is selected and clicking the check-box.I hope this is an easy fix and my newbie-ness is at fault.

<script type="text/javascript" language="JavaScript"><!--
function show(obj)
{

[code]....

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Jan 28, 2011

I have a form which check boxes. The last check box is labeled "other". What I want is that when the user clicks other my text field contained in my hidden "details" div will be displayed so they can specify "other".

Here is the JS code I have in the head of my page:
<script type="text/javascript" language="JavaScript"><!--
function RemoveContent(d) {
document.getElementById(d).style.display = "none";
}function InsertContent(d) {
document.getElementById(d).style.display = "";
}
//--></script>

Here is the code on the "other" check box:
<label class="checks">
<input type="checkbox" name="Other" id="other"
onselect="PresentForm ('details');" />
Other</label>

And the code for the details div:
<div id="details" class="checks">
<label >
<input type="text" name"details" size="30" />Please Explain</label>
</div>

Here is the CSS for the details text field:
#details {
padding-left:20px;
display:none;
}

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