Pass PHP Variable to Javascript function from Button

Question

Here's what I got.

<script type="text/javascript">
function show_confirm(id)
{
var r=confirm("Are you sure you want to duplicate this record?");
if (r==true)
  {
  window.open ("http://domain.com/process.php?duplicate=id","mywindow");
  }
else
  {
  alert("Record Not Duplicated.");
  }
}
</script>

then below that:

$query = "SELECT * FROM contacts";
        $result = mysql_query($query);      

        while($row = mysql_fetch_row($result)){

                $id = $row[0];
                $company = $row[3];
                $firstName = $row[4];
                $protection = $row[20];

            echo '<tr>';
            echo '<td width="120" align="middle"><font color="black"><b>' . $company . '</b></font></td>';
            echo '<td width="120" align="middle"><font color="black"><b>' . $firstName . '</b></font></td>';

            echo "<td width='120' align='middle'><a style='text-decoration: none;' href='http://domain.com/index.php?id=14&edit=" . $id . "'><span style='font-family:Helvetica; color:black;'>Edit</span></a>";
            echo "<td width='120' align='middle'><input type='button' onclick='show_confirm($id)' value='Duplicate' />";

            echo "</td>";               
            echo '</tr>';


        }
        ?>

The problem is this:

echo "<td width='120' align='middle'><input type='button' onclick='show_confirm($id)' value='Duplicate' />";

This is supposed to be a button where when the user clicks it, it says "are you sure you want to duplicate?" then if the use clicks yes, it to http://domain.com/process.php?duplicate=(whatever the ID is)

The problem is my variable (in php) $id, isn't getting passed to the javascript window.open. I need the $id from the row to be passed along in the javascript. I tried writing it, but it didn't work. Doesn't even see the variable. I've tried manually entering in <?php echo $id; ?> and that didn't work as well.

Thank you

gen_Eric · Accepted Answer · 2012-01-25 16:49:59Z

1

window.open ("http://domain.com/process.php?duplicate=id","mywindow");

The URL is the string "http://domain.com/process.php?duplicate=id". You need to concat the variable to the string. LIke this:

"http://domain.com/process.php?duplicate="+id

It should look like this:

window.open ("http://domain.com/process.php?duplicate="+id,"mywindow");

answered Jan 25, 2012 at 16:49

gen_Eric

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konsolenfreddy · Accepted Answer · 2012-01-25 16:50:11Z

0

In order to pass the id, you must use the variable:

window.open ("http://domain.com/process.php?duplicate=" + id,"mywindow");

(you put it in the string)

answered Jan 25, 2012 at 16:50

konsolenfreddy

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Ihab Agha · Accepted Answer · 2012-01-25 17:06:22Z

0

You have to do the right concatenation operation by using the string concatenation operator in JavaScript which is the + As you can see below all what you have to do is just attaching the id variable to your URL string.

window.open ("http://domain.com/process.php?duplicate="+ id ,"mywindow");

answered Jan 25, 2012 at 17:06

Ihab Agha

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