jQuery EasyUI 树形菜单 - 树形网格添加分页

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pre-wrap;}jQuery EasyUI 树形菜单 - 树形网格添加分页本教程展示如何向带有动态加载特性的树形网格（TreeGrid）添加分页。创建树形网格（TreeGrid）启用树形网格（TreeGrid）的分页特性，必须添加 'pagination:





true' 属性，这样页面加载时就会向服务器发送 'page' 和 'rows' 参数。    <table title="Products" class="easyui-treegrid" style="width:





700px;height:





300px"            data-options="                url:





'treegrid4_getdata.php',                rownumbers:





true,                pagination:





true,                pageSize:





2,                pageList:





[2,10,20],                idField:





'id',                treeField:





'name',                onBeforeLoad:





function(row,param){                    if (!row) {    // load top level rows                        param.id = 0;    // set id=0, indicate to load new page rows                    }                }            ">        <thead>            <tr>                <th field="name" width="250">Name</th>                <th field="quantity" width="100" align="right">Quantity</th>                <th field="price" width="150" align="right" formatter="formatDollar">Price</th>                <th field="total" width="150" align="right" formatter="formatDollar">Total</th>            </tr>        </thead>    </table>服务器端代码treegrid4_getdata.php$page = isset($_POST['page']) ? intval($_POST['page']) :





1;$rows = isset($_POST['rows']) ? intval($_POST['rows']) :





10;$offset = ($page-1)*$rows;$id = isset($_POST['id']) ? intval($_POST['id']) :





0;include 'conn.php';$result = array();if ($id == 0){    $rs = mysql_query("select count(*) from products where parentId=0");    $row = mysql_fetch_row($rs);    $result["total"] = $row[0];        $rs = mysql_query("select * from products where parentId=0 limit $offset,$rows");    $items = array();    while($row = mysql_fetch_array($rs)){        $row['state'] = has_child($row['id']) ? 'closed' :





'open';        array_push($items, $row);    }    $result["rows"] = $items;} else {    $rs = mysql_query("select * from products where parentId=$id");    while($row = mysql_fetch_array($rs)){        $row['state'] = has_child($row['id']) ? 'closed' :





'open';        $row['total'] = $row['price']*$row['quantity'];        array_push($result, $row);    }}echo json_encode($result);function has_child($id){    $rs = mysql_query("select count(*) from products where parentId=$id");    $row = mysql_fetch_array($rs);    return $row[0] > 0 ? true :





false;}发送到服务器的参数包括：page：要加载的当前页面。rows：页面尺寸大小。id：父行的 id 值，从服务器返回的行将被添加。当展开一个行节点时，'id' 值是大于 0 的。当改变页码时，'id' 值应该被设置为 0 来放置加载子行。下载 jQuery EasyUI 实例jeasyui-tree-treegrid4.zip