Jquery validate form input if certain checkboxes are checked

Question

I have a multi-page form that first takes basic user information with some jquery.validate error checking to see if the fields are filled in and if the email address is valid.

Below is a series of checkboxes (type_of_request) for new accounts, account deletion, new software, etc. that show / hide these form elements as they are marked or not checked.

I would like to check the necessary sections in the form ONLY if the corressponding type_of_request element is checked.

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Update info

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This is a great solution, but it seems to require all the children of the selected section.

A typical scenario would be either an email flag or another flag in type_request:

   <div id="email" style="display: block;"> // shown because other has been selected in the type request
     <input id="email_new_account" class="sq-form-field" type="checkbox" value="0" name="q4836:q1"/> // not required
     <input id="email_new_account_name" class="sq-form-field" type="text" name="q4836:q2"/> // if email_new_account checked then make required
     <input id="email_new_account_access" class="sq-form-field" type="text" name="q4836:q2"/> // if email_new_account checked then make required
     <input id="email_new_account_manager" class="sq-form-field" type="text" name="q4836:q3"/> // if email_new_account checked then make required

     <input id="email_add_remove_access" class="sq-form-field" type="checkbox" value="0" name="q4837:q1"/> // not required
     <input id="email_add_remove_account_name" class="sq-form-field" type="text" name="q4837:q2"/> // if email_add_remove_access checked then make required
     <input id="email_add_access" class="sq-form-field" type="text" name="q4836:q2"/> // if email_add_remove_access checked then make required
     <input id="email_remove_access" class="sq-form-field" type="text" name="q4837:q3"/> // if email_add_remove_access checked then make required
   </div>
   <div id="other" style="display: block;"> // shown because other has been selected in the type request
     <input id="other_describe_request" class="sq-form-field" type="text" name="q4838:q1"/> // required because #other was checked in type request
     <input id="other_request_justification" class="sq-form-field" type="text" name="q48387:q2"/> // required because #other was checked in type request
   </div>

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, :

class="{required:true, messages:{required:'Please enter 
your email address'}}"

class="{required:true, email:true, messages:{required:'Please enter 
your email address', email:'Please enter a valid email address'}}"

class="{required:'input[@name=other]:checked'}" 

http://jquery.bassistance.de, . , ?

Answer 1

, , , jquery.validate.js jquery.metadata.js http://bassistance.de/jquery-plugins/jquery-plugin-validation/

, / id ( show/hide ).

<fieldset id="request-type">
<legend>Type of Request</legend>
<ul>
<li><input type="checkbox" name="q4838:q1[]" id="q4838_q1_0" value="0"  class="sq-form-field" /><label for="q4838_q1_0">New account</label></li>
<li><input type="checkbox" name="q4838:q1[]" id="q4838_q1_1" value="1"  class="sq-form-field" /><label for="q4838_q1_1">Delete account</label></li>
<li><input type="checkbox" name="q4838:q1[]" id="q4838_q1_2" value="2"  class="sq-form-field" /><label for="q4838_q1_2">Change access/account transfer</label></li>
<li><input type="checkbox" name="q4838:q1[]" id="q4838_q1_3" value="3"  class="sq-form-field" /><label for="q4838_q1_3">Hardware</label></li>
<li><input type="checkbox" name="q4838:q1[]" id="q4838_q1_4" value="4"  class="sq-form-field" /><label for="q4838_q1_4">Software</label></li>
<li><input type="checkbox" name="q4838:q1[]" id="q4838_q1_5" value="5"  class="sq-form-field" /><label for="q4838_q1_5">Email</label></li>
<li><input type="checkbox" name="q4838:q1[]" id="q4838_q1_6" value="6"  class="sq-form-field" /><label for="q4838_q1_6">Other</label></li>
</ul>
</fieldset>

, " ", ""

<fieldset id="delete-account" style="display: block;">

, , .

class="{required:'#checkboxid:checked', messages:{required:'required error message'}}"

"- " :

<fieldset id="delete-account" style="display: block;">
<legend>Delete Account</legend>

<label  for="q4832_q1">Cessation date</label>
<input type="text" name="q4832:q1value[d]" value="" class="{required:'#q4838_q1_1:checked', messages:{required:'Enter Cessation Date'}}" id="q4832:q1value[d]" />

<label  for="q4832_q1">List of assets</label>
<input type="text" name="q4832:q2" value="" class="{required:'#q4838_q1_1:checked', messages:{required:'Enter Cessation Date'}}" id="q4832:q2" />
</fieldset>

"" true false i.e. {required:'true', messages:{required:'This field is required'}}, true false, #checkboxid:checked. , 'true', , 'false', .

, , - , class

class="{required:'true', minlength:1, messages:{required:'Please select a checkbox'}}"

, minlength.

Answer 2

, jQuery , / / , .

$(document).ready( function() { $('form').validate(); } );

function init_validation(divName)
{
    $('div#' + divName).find('input').addClass( 'required' );
    $('div#inputs').children('div:not(#' + divName + ')')
                  .find('input')
                  .removeClass( 'required' );
}

HTML:

<form>
<div>
  <input type='radio'
         id='new_account_radio'
         name='interface_selector'
         value='new_account'
         selected=true
         onclick='init_validation("new_account");' /> New Account

  <input type='radio'
         id='delete_account_radio'
         name='interface_selector'
         value='delete_account'
         onclick='init_validation("delete_account");' /> Delete Account

  <input type='radio'
         id='new_software_radio'
         name='interface_selector'
         value='new_software'
         onclick='init_validation("new_software");' /> New Software

</div>

<div id='inputs'>
   <div id='new_account'>
       <input type='text' id='new_account_name' class='required' />
   </div>

   <div id='delete_account'>
       <input type='text' id='delete_account_name' />
   </div>

   <div id='new_software'>
       <input type='text' id='new_software_name' />
   </div>
</div>
</form>