table data dissapears in the DOM when page is changed?

tbone587

I have a datatable setup for a table that has columns with a checkbox that have an associated css class. I am tracking how many checkboxes are checked and it works fine until I switch pages in the table. Once I switch the page on the table view, it no longer reads the checkbox state. I used firefox firebug and it seems like the data in the dom is gone once the page of the table is changed. I was al

allan

DataTables removes the TR elements that it doesn't need to display for a give page, so it is likely you are encountering that. You can use the $ or fnGetNodes API methods to get all elements from the table.

Allan

tbone587

Allan,

I have used the below code to allow me to sort by checked items, which works nicely. I want to make a new function that is modified slightly that just returns a number of boxes checked. How can I call this function at any time?

[code]
$.fn.dataTableExt.afnSortData['dom-checkbox'] = function ( oSettings, iColumn )
{
var aData = [];

$( 'td:eq('+iColumn+') input', oSettings.oApi._fnGetTrNodes(oSettings) ).each( function () {

//Item Checked
if (this.checked == true)
{
aData.push("1");
}

//Not Checked
else
{
aData.push("0");
}

} );
return aData;
}
[/code]

tbone587

I figured it out:) Below is the function I created to provide a count of selected checkedboxes in the first column:

[code]
//Find User Checkboxes Selected
function CalculateSelectedUsers()
{
var oSettings = userDataTableList.fnSettings();
var columnIndex = 0;
usersChecked = 0;

$( 'td:eq('+columnIndex+') input', oSettings.oApi._fnGetTrNodes(oSettings) ).each( function () {

//Item Checked
if (this.checked == true)
{
usersChecked++;
}
});

return (usersChecked);
}
[/code]

allan

This would work as well:

[code]
userDataTableList.$('input:checked').length
[/code]

Assuming you only have one column for checkboxes - otherwise you could refine the selector a bit.

Allan

tbone587

thank you very much allan, that is a cleaner way to do this for sure! I am really loving these data tables!

allan

> I am really loving these data tables!

Thank you :-)

Allan