PHP中的JS删除、保存功能怎样与数据库交互？该怎么处理

<script>

        function productFormatter(value){
            for(var i=0; i<products.length; i++){
                if (products[i].work == value) return products[i].name;
            }
            return value;
        }
        $(function(){
            var lastIndex;
            $('#tt').datagrid({
                toolbar:[{
                    text:'新增',
                    iconCls:'icon-add',
                    handler:function(){
                        $('#tt').datagrid('endEdit', lastIndex);
                        $('#tt').datagrid('appendRow',{
                            itemid:'',
                            work:'',
                            salary:'',
                            unitprice:'',
                            ename:'',
                            status:'P'
                        });
                        lastIndex = $('#tt').datagrid('getRows').length-1;
                        $('#tt').datagrid('selectRow', lastIndex);
                        $('#tt').datagrid('beginEdit', lastIndex);
                    }
                },'-',{
                    text:'删除',
                    iconCls:'icon-remove',
                    handler:function(){
                        var row = $('#tt').datagrid('getSelected');
                        if (row){
                            var index = $('#tt').datagrid('getRowIndex', row);
                            $('#tt').datagrid('deleteRow', index);
                        }
                    }
                },'-',{
                    text:'保存',
                    iconCls:'icon-save',
                    handler:function(){
                        $('#tt').datagrid('acceptChanges');
                    }
                },'-',{
                    text:'撤销全部',
                    iconCls:'icon-undo',
                    handler:function(){
                        $('#tt').datagrid('rejectChanges');
                    }
                },'-',{
                    text:'查看变更',
                    iconCls:'icon-search',
                    handler:function(){
                        var rows = $('#tt').datagrid('getChanges');
                        alert('变更行数: ' + rows.length + ' 行！');
                    }
                }],
                onBeforeLoad:function(){
                    $(this).datagrid('rejectChanges');
                },
                onClickRow:function(rowIndex){
                    if (lastIndex != rowIndex){
                        $('#tt').datagrid('endEdit', lastIndex);
                        $('#tt').datagrid('beginEdit', rowIndex);
                    }
                    lastIndex = rowIndex;
                }
            });
        });
    </script>