Retrieving value from dynamically created text box in php?

Question

It will create text box with name=id1,id2,id3..... on clicking the add option. But when I going to fetch the value, it will give an error " Undefined index: id2"

<script>
var i=1;
function myFunction() {
    i++;
    var x = document.createElement("INPUT");
    x.setAttribute("type", "text");
    x.setAttribute("name", "id"+i);
    elem = document.getElementById("hide_specific");
   elem.appendChild(x);

}
</script>


<body>
<?php 
$submission="";
if($_SERVER["REQUEST_METHOD"]=="POST"){$submission=$_POST["id2"];} 
?>

<table>
<form action="" method="POST">

<tr>
<td>
<div  id="hide_specific"><input type="text" name="id1" ><span       onClick="myFunction()">Add</span></div>

</td>
</tr>

<tr> <td><input type="submit" name="set" value="Set"></td></tr>
<tr><td>
<?php echo $submission; ?></td></tr>

</form>
</table>
</body>

try isset function

Dhinju Divakaran
– Dhinju Divakaran

2015-07-17 12:49:48 +00:00
Commented Jul 17, 2015 at 12:49 — Dhinju Divakaran
– Dhinju Divakaran, Commented Jul 17, 2015 at 12:49

Unni Babu · Accepted Answer · 2015-07-17 13:00:14Z

1

Checked this question in my localhost, and used firebug.. Found that form get closed in table(form without dynamically created inputs,id2,id3 etc). Thats why POST values are not getting.Your script is absolutely fine. Try to add form tag before table. Code shown below



<body>
<?php
$submission="";
if($_SERVER["REQUEST_METHOD"]=="POST"){$submission=$_POST["id2"];}
?>
<form action="" method="post">  <!-- ######### OPEN FORM TAG BEFORE TABLE -->
<table>


        <tr>
            <td>
                <div  id="hide_specific"><input type="text" name="id1" ><span       onClick="myFunction()">Add</span></div>

            </td>
        </tr>

        <tr> <td><input type="submit" name="set" value="Set"/></td></tr>
        <tr><td>
                <?php echo $submission; ?></td></tr>


</table>
</form>
</body>

edited Jul 17, 2015 at 13:00

answered Jul 17, 2015 at 12:54

Unni Babu

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Comments

ventaquil · Accepted Answer · 2015-07-17 12:48:30Z

0

$_POST["id2"]; get value from input NAME not ID :)

answered Jul 17, 2015 at 12:48

ventaquil

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