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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Jan 10, 2011
I have an HTML table with <tr> sections that is generated by php which looks like the following
HTML Code:
<tr align='center' class='row_a'>
<td align='center'><input id = 'assign0' type='checkbox' name='agent_8949' value='0' /></td></tr>
<tr align='center' class='row_b'>
<td align='center'><input id = 'assign1' type='checkbox' name='agent_8950' value='1' /></td></tr>
<tr align='center' class='row_a'>
<td align='center'><input id = 'assign2' type='checkbox' name='agent_8951' value='2' /></td></tr>
<tr align='center' class='row_b'>
<td align='center'><input id = 'assign3' type='checkbox' name='agent_8952' value='3' /></td></tr>
The id's and values are generated by php, my problem is, I want to use javascript to check if anyone of the check boxes has been checked on submission meaning that I have to go through the <tr> list. Here is my JS code which only works for one id.
Code:
//I know the length of the checkbox (checkBoxID) fields which is the number of rows in the database table
function validate(checkBoxID){
var ids_Prefix = 'assign';//we know all the ids starts with this string
for (var i = 0; i < checkBoxID; ++i) {
if(document.getElementById(id_Prefix+i).checked == false){//how do I check the next one?
alert("You did not make any selection");
return false;
}}}
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Jul 23, 2005
I am having a problem with the last results. I can't seem to be able to
get the input2A and input3A to appear. I don't seem to have a problem
with the show and hide after a number is entered and submitted. If
anyone can answer my problem I will be greatly appreciated with a
prize. I actually have submitted it more than once and I haven't had
anyone been able to answer it yet. Code:
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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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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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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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Oct 8, 2002
I have a page generate by ASP and I want to validate the form value.
Generated page by ASP :
<form method=post action="<%=strPrgName%>" name="OrderForm">
<% for i = 1 to itemcount %>
Name : <input name=toname<%=i%> onBlur="validateName(this)">
<% next %>
<input type=submit value="View">
For example itemcount = 2, html code will be like this :
<form method=post action="<%=strPrgName%>" name="OrderForm">
Name : <input name=toname1 onBlur="validateName(this)">
Name : <input name=toname2 onBlur="validateName(this)">
<input type=submit value="View">
Javascript :
<script language="JavaScript">
function validateName(field)
{
var val = field.value;
if(!/[a-z]/.test(val)||val=="")
{
alert("Format name wrong !");
field.focus();
field.select();
}
}
</script>
I got this script and modify it, the original code for validating number only. My need is this script validate the form to check if input only alphanumeric (a-z, A-Z, "," and ".").
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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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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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Aug 17, 2011
is there a way to ask if the #FORM.fieldname# exist to proceed with the next one ? FYI : StartDateName22 is a dynamic generated textbox i am using the following code :
<cfif not isDefined (#FORM.StartDateName22#) or #FORM.StartDateName22# or EQ "" >
<cfoutput>
Elemnt 2,2 is not defined
</cfoutput>
<cfelse>
<cfoutput>
[Code]...
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Jun 19, 2009
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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Sep 6, 2011
I will like to know if there is anyway to view all the rules that I have currently in the Jquery validation plugin. Currently, I am trying to add in rules dynamically through the rules(add) function after adding some dynamic fields through the user inputs. the rules are added in this manner.
[Code]...
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Jan 2, 2005
I have been working over this Javascript a few times and cannot seem to get it working correctly, I have found the javascript mostly by searching on the net and on this forum.
What I am trying to do is to use a function with in another function to check that a group of checkboxes have atleast one checked. Code:
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Feb 20, 2006
I am displaying some datas in listbox and checkbox which are gathered from the database. without choosing any of the checkbox and listbox if the user clicks the button i need to display an alert message. pls help. i am sending the code in which i am trying now.
LISTBOX
<select name="adminroles" >
<option value="" selected>--Select--</option>
<?
$admin_roles = mysql_query ("select * from role_master");
$admin_roles= mysql_num_rows($admin_roles);
for($k=0;$k<$admin_roles;$k++)
{
?>
<option value= "<? echo mysql_result($admin_roles,$k,role_id); ?>">
<? echo mysql_result($admin_roles,$k,role_name);?> </option>
<?
}
?>
</select>
<input type="checkbox" value="<? echo mysql_result($res1,$z,function_id);?>" name="chk[]" <? if($edit_func_id == mysql_result($res1,$z,function_id)){?>
checked<? } ?> >
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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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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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May 5, 2009
this is dynamic rows code.when i click remove(-) any row i need to get respective checkbox id; for example when i delete row3 i need to get checkbox id as houseCheck3;when i delete row2 i need to get checkbox id as houseCheck2;
once i get the id of that checkbox its easy for me to get the value;
Code JavaScript:
<HTML>
<HEAD>
<TITLE> New Document </TITLE>
[code].....
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Jun 1, 2011
I have a text input, "Pets" and a checkbox "noPetsHS"."Pets" is required except when "noPetsHS" is checked. My validation rule currently is - and does not work? Pets:{required: "#noPetsHS:checked=false", min:1}"Pets" is usually required, very few select the checkbox, but I don't want "Pets" required if they do.I can find no reference to Rules and testing for absence of check and then requiring the text input.
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May 6, 2009
I have a form with a password the user must enter. The password has no conditions, but there is a checkbox next to it. Users have an option to choose one of two checkboxes. If they choose the checkbox with the password then the password is required, the other checkbox does not require a password so the form would not need to validate the password in that instance.
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Sep 18, 2011
I have a simple html form with 2 text fields and submit button 1 user name pwd/tokenand 1 checkbox 'First time user'if 'first time user' is selected then the 'Submit' button to be enabled only if the customer puts exactly 6 digits on pwd/token. if it's unchecked then the submit button to be enabled only if the customer enters 10 digits(pin_token code)
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Dec 11, 2007
how I can make sure that out of a group of 10 checkboxes atleast 1 is checked?
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Dec 15, 2006
I'm working on a Ruby on Rails web app and I'm trying to add a quick and dirty client-side Javascript validation, to ensure that users click a checkbox agreeing to our Ts and Cs, before clicking the "Register" button submits their info.
I'll post the generated HTML, rather than the Rails stuff.
This is the button that shouldn't submit the form until the checkbox has been clicked:
<input name="commit" onClick="return check_agreed()" type="submit" value="Complete Registration" /> or <a href="/">Cancel</a>
First off, to confirm that the onClick actually checks check_agreed(), I kept check_agreed() simple, just popping up an alert then returning false.
<script language="JavaScript">
function check_agreed()
{
alert("check_agreed checked");
return false;
}
</script>
This seems to work fine - the alert pops up and nothing is submitted. I have a checkbox:
<input type="checkbox" name="terms_agreed">
I'd like this to be checked before the form can be submitted, so I've altered check_agreed() and added some debugging alerts.
function check_agreed()
{
alert("in check_agreed");
if(terms_agreed == checked)
{
alert("checked");
return true;
}
alert("Please agree to the Terms and Conditions");
return false;
}
So now the first alert, "in check_agreed" pops up, but then the form is submitted, with neither "checked" nor "Please agree..." popping up. This happens regardless of whether the checkbox has been clicked.
I'm sure I'm doing something wrong - it seems to be to do with referring to the checkbox. Should I be giving the checkbox's complete path, rather than referring to it by its name? I've tried to work out the correct path according to the DOM, but it still does the same thing.
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Nov 1, 2007
I have a simple form which I'm trying to validate. I have around 8 checkboxes that the user has to agree with, and if they dont, they get the message saying "you did not accept the training princples, yada yada".
I also have a few text fields asking for their details.
Maybe I'm missing something simple here, but everytime I submit the form, it doesnt validate. Im not fantastic at coding, but I was hoping this would be quite straight forward. All I'm trying to do is get a message up if the user doesnt agree with all of the checkboxes. Code:
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Oct 2, 2009
I have a form with multiple fieldsets which are visible conditionally. There are three submit buttons "Abandon", "Save" and "Save & Continue". Each button should validate specific controls of the form and submit it. I tried setting "onsubmit: false" and checking for "$('#myForm').valid ()" on click of these buttons., but that validates all controls of the form.
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Apr 1, 2011
I am trying to display validation error messages when form validation fails. Currently it does display the error messages but then disappears straight away. How can I stop the page from refreshing when validation fails? I have return false in my code when validation fails but still having same problem. Currently I have only done the validation for the full name only. The error msg is showed in:
[Code]...
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Jun 21, 2009
This is in regards to Jrn Zaefferer's plug in.How do you customize input validation so that I can remove foullanguage?So that first name or last name doesn't have "fck you" or something
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