Re: Ajax

I think you need to set it here. <script type="text/javascript"> $(document).ready(function(){

           $("#e1").dblclick(function(e) {

var id = $(this).attr('id'); ///This was missing

                 $.post("testClickcallback.php",
                  {"custnum":cusn},  function getCustNo(id)
       {
           cno = 'cust'+id;
           cnm = "name"+id;
           cname = document.getElementById(cnm).innerHTML;
           cnum = document.getElementById(cno).innerHTML;
       alert("For customer "+cname+" the number is "+cnum);
           return;
       }
//    alert("subval");

//alert(subval); ,"html"); }); }); </script> Best, Karl On Feb 20, 2013, at 7:39 PM, Ethan Rosenberg, PhD wrote:

On 02/20/2013 08:30 PM, Karl DeSaulniers wrote:

Hi Ethan, Quick question. I'm either looking right over it or I do not see how/where var id is set. Where is this at? Code Eg: cnm = "name"+id; Best, Karl On Feb 20, 2013, at 6:27 PM, Ethan Rosenberg, PhD wrote:

Dear List - I think we have to revisit this. The object is to click on an element of a table [name field] and retrieve the customer number[number field] send th eresult as an Ajax call to a callback function as a json string, and get back the customer number as a PHP variable. Code snippits: Start: <div id="e1"> Table: $results = "<table border=4 cellpadding=5 cellspacing=55 rules=all frame=box style='table-layout:fixed;'>"; $results .= "<tr><th>Name</th><th>Number</th></tr>"; // generate a table here for($i=0; $i<10; $i++) {

       $k = $i ;
       $results .= "<tr><td id='name$i' >$names[$k] </td><td  id='nums$k'>$nums[$k]</td></tr>";

} $results = "<table border=4 cellpadding=5 cellspacing=55 rules=all frame=box style='table-layout:fixed;'>"; $results .= "<tr><th>Name</th><th>Number</th></tr>"; } $results .= "</table>"; $results; retrieve number: <script type="text/javascript"> var cusn; $(document).ready(function(){

       $("#e1").click(function() {
           cusn = $(this).attr('id');
           alert(cusn); // this always returns e1
       });

}); </script> Ajax Call <script type="text/javascript"> $(document).ready(function(){

           $("#e1").dblclick(function(e) {
                $.post("testClickcallback.php",
                  {"custnum":cusn},  function getCustNo(id)
       {
           cno = 'cust'+id;
           cnm = "name"+id;
           cname = document.getElementById(cnm).innerHTML;
           cnum = document.getElementById(cno).innerHTML;
       alert("For customer "+cname+" the number is "+cnum);
           return;
       }
//    alert("subval");

//alert(subval); ,"html"); }); }); </script> // receive error: document.getElementById(...) is null Callback function: <?php $json = Array(); $json['custnum'] = $_POST['cusn']; echo json_encode($json); ?> //response: | ||Notice: Undefined index: cusn in /var/www/testClickcallback.php on line 5 || ||Call Stack:

||     0.0005     126856   1. {main}() /var/www/testClickcallback.php:0

|| || ||Variables in local scope (#1): || $json = array () || ||{"custnum":null} Now what??||||| Ethan --PHP Database Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php

Karl DeSaulniers Design Drumm http://designdrumm.com

============== Karl - I do not see how/where var id is set $results .= "<tr><td id='name$i' >$names[$k] </td><td id='nums$k'>$nums[$k]</td></tr>"

                                  ^^^^^^^                                        ^^^^^^^^

Is this the problem?? Poor formatting of the table row? Ethan

Karl DeSaulniers Design Drumm http://designdrumm.com