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POif checkbox is not checked it should not take its value and error should not be displayed
primarykey
Id
20828449
data
AcceptedAnswerId
0
AnswerCount
2
ClosedDate
CommentCount
9
CommunityOwnedDate
CreationDate
2013-12-29T18:11:08.907
FavoriteCount
0
LastActivityDate
2013-12-29T20:24:00.937
LastEditDate
2013-12-29T19:44:47.483
LastEditorUserId
3132845
OwnerUserId
3132845
ParentId
0
PostTypeId
1
Score
0
ViewCount
687
LastEditorDisplayName
text
Body
<p>i have a coding. In that checkbox may or may not be checked, if it is checked there is no error if the checkbox is not checked then error occurs. can anyone give solution for this this is my html code for checkbox </p> <pre><code><input name="cb" type="checkbox" id="set_2" value="20"/> Project<td><i class = "pro_hidden pro_option_set_2"> Included</i></td> </code></pre> <p>If the check box is checked it takes the value 20 and if not checked it will not take the value but it shows <code>Notice: Undefined index: cb</code>I also included javascript if the checkbox is checked it shows included. if not checked it displays nothing...the javascript coding s this</p> <pre><code><script src="http://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js">/script> <script> $('.pro_hidden').css({ 'display': 'none' }); $(':checkbox').change(function() { var option = 'pro_option_' + $(this).attr('id'); if ($('.' + option).css('display') == 'none') { $('.' + option).fadeIn(); } else { $('.' + option).fadeOut(); } }); </script> </code></pre> <p>I am trying to add values:</p> <pre><code><tr> <td>duration</td> <td><input type="text" name="duration" values=""> </td> </tr> <tr> <td><input type="radio" name="rd" value="2" required>2hrs</td> <td><input type="radio" name="rd" value="4" required>4hrs</td> </tr> <tr> <td> <input name="cb" type="checkbox" id="set_2" value="20"> Project<td><i class = "pro_hidden pro_option_set_2"> 20hrs Included</i></td> </td> </code></pre> <h2> </h2> <p>this is my entire code if this form is submitted it goes to next page and add the values using php</p> <pre><code> <?php $du=$_POST['duration']; $cb=$_POST['cb']; $c=$_POST['rd']; $sum=($du+$cb)/$c; echo $sum; ?> </code></pre> <p>if checkbox is not checked it displays error here...if the checkbox is not checked how to give coding??</p>
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Title
if checkbox is not checked it should not take its value and error should not be displayed
singulars
PostAcceptedAnswerId
1. This table or related slice is empty.
PostParentId
1. This table or related slice is empty.
PostTypePostTypeId
1. PTQuestion
UserLastEditorUserId
1. USuser3132845
UserOwnerUserId
1. USuser3132845
plurals
PostLinksPostIdRelatedPostId
1. This table or related slice is empty.
PostLinksRelatedPostIdPostId
1. This table or related slice is empty.
PostsAcceptedAnswerId
1. This table or related slice is empty.
PostsParentIdCreationDate
1. PO
  singulars
  PostTypePostTypeId
  PTAnswer
2. PO
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  PostTypePostTypeId
  PTAnswer
VotesPostIdCreationDate
1. This table or related slice is empty.
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