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