Question

I’ve been trying to work out how to pass additional parameters to a javascript callback function.

In similar posts users have succeeded using anonymous function (these are new to me so I may have been doing them wrong) but I just can’t get them to fire.

The below is what I have now, I need to be able to pass the itemId to the function “ajaxCheck_Callback” as well as the response.

Hope this makes sense.

Thanks for the help.

function delete(itemId)
{
  selectpage.ajaxCheck(itemId, ajaxCheck_Callback);
}


Function ajaxCheck_Callback(response)

{
  alert(response);
  alert(itemId);
}

Thanks for the help guys. I now get undefined on my alert whereas previously this was alerting correctly.

function delete(itemId)
{
  selectpage.ajaxCheck(itemid, function () {ajaxCheck_Callback(itemid); });
}


function ajaxCheck_Callback(response)

{
  alert(response);
  alert(itemId);
}

Answer 1

The way is usually done is to use an anonymous function.

function deleteItem(itemId) {
    selectpage.ajaxCheck(itemId, function() { ajaxcheck_Callback(itemId); });
}

function ajaxCheck_Callback(response)
{
    alert(response);
}

Careful with your syntax, there are some errors in there. The function keyword has a lower-case f and you can’t have a function named delete, that’s a reserved keyword.