Normally jQuery datatable will display 10 records at a time. If we select using paging max it will show 100. If user needs to select all records form all pages. Below example I will show you how to select all records from all pages of jQuery datatable and same way if user unchecks select all checkbox it will uncheck checkboxes from all pages.
Example:
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>check all rows in jQuery datatables grid </title>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script>
<link href="//cdn.datatables.net/1.10.12/css/jquery.dataTables.min.css" rel="stylesheet" type="text/css" />
<script type="text/javascript" src="//cdn.datatables.net/1.10.12/js/jquery.dataTables.min.js"></script>
<script type="text/javascript">
$(function () {
$("#chkAll").click(function () {
$("input[name='employees']").attr("checked", this.checked);
});
$('#example').DataTable({
});
});
</script>
</head>
<body style="width:500px">
<form id="form1" runat="server">
<table id="example" class="display" cellspacing="0" width="100%">
<thead>
<tr>
<th align="left"><input type="checkbox" id="chkAll" /></th>
<th>Name</th>
<th>Position</th>
<th>Salary</th>
</tr>
</thead>
<tbody>
<tr>
<td><input type="checkbox" name="employees" /></td>
<td>Tiger Nixon</td>
<td>System Architect</td>
<td>$320,800</td>
</tr>
<tr>
<td><input type="checkbox" name="employees" /></td>
<td>Garrett Winters</td>
<td>Accountant</td>
<td>$170,750</td>
</tr>
<tr>
<td><input type="checkbox" name="employees" /></td>
<td>Ashton Cox</td>
<td>Junior Technical Author</td>
<td>$86,000</td>
</tr>
<tr>
<td><input type="checkbox" name="employees" /></td>
<td>Cedric Kelly</td>
<td>Senior Javascript Developer</td>
<td>$433,060</td>
</tr>
<tr>
<td><input type="checkbox" name="employees" /></td>
<td>Airi Satou</td>
<td>Accountant</td>
<td>$162,700</td>
</tr>
<tr>
<td><input type="checkbox" name="employees" /></td>
<td>Brielle Williamson</td>
<td>Integration Specialist</td>
<td>$372,000</td>
</tr>
</tbody>
</table>
</form>
</body>
</html>
Output: