jEasyUI 添加查詢功能

本實例演示如何從數(shù)據(jù)庫得到數(shù)據(jù)，并將它們顯示在數(shù)據(jù)網(wǎng)格（datagrid）中。然后演示如何根據(jù)用戶輸入的搜索關(guān)鍵詞搜尋顯示結(jié)果。

創(chuàng)建數(shù)據(jù)網(wǎng)格（DataGrid）

創(chuàng)建帶有分頁功能的數(shù)據(jù)網(wǎng)格（datagrid），然后添加工具欄到其中。

????<table id="tt" class="easyui-datagrid" style="width:600px;height:250px"
????????????url="datagrid24_getdata.php" toolbar="#tb"
????????????title="Load Data" iconCls="icon-save"
????????????rownumbers="true" pagination="true">
????????<thead>
????????????<tr>
????????????????<th field="itemid" width="80">Item ID</th>
????????????????<th field="productid" width="80">Product ID</th>
????????????????<th field="listprice" width="80" align="right">List Price</th>
????????????????<th field="unitcost" width="80" align="right">Unit Cost</th>
????????????????<th field="attr1" width="150">Attribute</th>
????????????????<th field="status" width="60" align="center">Stauts</th>
????????????</tr>
????????</thead>
????</table>

工具欄定義如下：

????<div id="tb" style="padding:3px">
????????<span>Item ID:</span>
????????<input id="itemid" style="line-height:26px;border:1px solid #ccc">
????????<span>Product ID:</span>
????????<input id="productid" style="line-height:26px;border:1px solid #ccc">
????????<a href="#" class="easyui-linkbutton" plain="true" onclick="doSearch()">Search</a>
????</div>

當(dāng)用戶輸入查詢值并按下查詢按鈕時，'doSearch' 函數(shù)將被調(diào)用：

????function doSearch(){
????????$('#tt').datagrid('load',{
????????????itemid: $('#itemid').val(),
????????????productid: $('#productid').val()
????????});
????}

上面的代碼調(diào)用了 'load' 方法來加載新的數(shù)據(jù)網(wǎng)格（datagrid）數(shù)據(jù)。我們需要傳遞 'itemid' 和 'productid' 參數(shù)到服務(wù)器。

服務(wù)器端代碼

????include 'conn.php';
????
????$page = isset($_POST['page']) ? intval($_POST['page']) : 1;
????$rows = isset($_POST['rows']) ? intval($_POST['rows']) : 10;
????$itemid = isset($_POST['itemid']) ? mysql_real_escape_string($_POST['itemid']) : '';
????$productid = isset($_POST['productid']) ? mysql_real_escape_string($_POST['productid']) : '';
????
????$offset = ($page-1)*$rows;
????
????$result = array();
????
????$where = "itemid like '$itemid%' and productid like '$productid%'";
????$rs = mysql_query("select count(*) from item where " . $where);
????$row = mysql_fetch_row($rs);
????$result["total"] = $row[0];
????
????$rs = mysql_query("select * from item where " . $where . " limit $offset,$rows");
????
????$items = array();
????while($row = mysql_fetch_object($rs)){
????????array_push($items, $row);
????}
????$result["rows"] = $items;
????
????echo json_encode($result);

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