Confirm box in CodeIgniter anchor link to delete record

Everything in one line

<?=anchor("user/deleteuser/".$row->id,"Delete",array('onclick' => "return confirm('Do you want delete this record')"))?>

Try This:

<a href="javascript:void(0);" onclick="delete(<?php echo $row->id;?>);">Delete</a>

and use this in your script:

<script type="text/javascript">
    var url="<?php echo base_url();?>";
    function delete(id){
       var r=confirm("Do you want to delete this?")
        if (r==true)
          window.location = url+"user/deleteuser/"+id;
        else
          return false;
        } 
</script>

Are you getting any Javascript errors in the console? I suspect that some other Javascript may be interfering. This simple test page works fine:

<?php echo anchor('user/deleteuser/'.$row->id, 'Delete', array('class'=>'delete', 'onclick'=>"return confirmDialog();")); ?>

<script>
function confirmDialog() {
    return confirm("Are you sure you want to delete this record?")
}
</script>