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POReference a hidden value in a form using jQuery/JavaScript
 

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  1. POReference a hidden value in a form using jQuery/JavaScript
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    <p>I am new to web development</p> <p>I have PHP delete function that I want to use to delete rows from a database table.</p> <pre><code>if($form_no==="delete" &amp;&amp; isset($_POST['id']) &amp;&amp; isset($_POST['form_no'])) { switch ($_POST['form_no']) { case 1:$table="employees"; break; default:break; } $query="DELETE from ".$table." where id=".$_POST['id']; mysql_query($query)or die( ' '.mysql_error().' '.$query); $message='deleted'; switch ($_POST['form_no']) { case 1:manageEmployees($message);break; default:break; } } </code></pre> <p>here is one of the forms that I am displaying on screen</p> <pre><code>&lt;tr&gt;&lt;th&gt;First Name&lt;/th&gt;&lt;th&gt;Last Name&lt;/th&gt;&lt;th&gt;Email&lt;/th&gt;&lt;th&gt;Password&lt;/th&gt;&lt;th&gt;Phone number&lt;/th&gt;&lt;/tr&gt; &lt;tr&gt;&lt;td&gt;&lt;input type="hidden" id="form_no" name="form_no" value="1"&gt;&lt;/td&gt;&lt;/tr&gt; &lt;tr&gt;&lt;td&gt;&lt;input type="text" name="firstname[]" id="firstname"&gt;&lt;/td&gt; &lt;td&gt;&lt;input type="text" name="lastname[]" id="lastname"&gt;&lt;/td&gt; &lt;td&gt;&lt;input type="text" name="email[]" id="email"&gt;&lt;/td&gt; &lt;td&gt;&lt;input type="text" name="password[]" id="password"&gt;&lt;/td&gt; &lt;td&gt;&lt;input type="text" name="phone_no[]" id="phone_no"&gt;&lt;/td&gt; &lt;td&gt;&lt;button type="submit" name="submit" id="submit"&gt;Add Employee&lt;/button&gt;&lt;/td&gt; &lt;td&gt;&lt;button type="button" name="delete" class="delete" value=21&gt;Delete Employee&lt;/button&gt;&lt;/td&gt;&lt;/tr&gt; &lt;td&gt;&lt;p&gt;&lt;p&gt;&lt;/td&gt; &lt;/tr&gt; </code></pre> <p>I am trying to get access to other values in a form. When the button is clicked I can get the ID I am looking for as it is the value of the button. What I really want to do is get the value of the hidden field and find out in which for the delete button is pressed.</p> <p>I can not use find elementById as the delete buttons are not unique nor are the forms. I am trying to use <code>$(this).parents().parents('#form_no').val()</code>, however this returns undefined. </p> <p>I know that it must be possible to do but I am not getting any closer, many thanks in advance if any one can point me in the right direction. </p>
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    1. USjprofitt
    1. USMark Gilchrist
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    1. COYou're close. Element id's **should** be unique. Change them to classes and you should be fine.
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      1. USJason P
    2. COJust wrote this up for a similar question, maybe can give you some pointers http://stackoverflow.com/questions/18260831/jquery-parsing-html-into-json/18261290#18261290
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      1. POReference a hidden value in a form using jQuery/JavaScript
      1. USb.kelley
    3. COand also, SQL injections.
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      1. USCallombert
 

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