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EasyUI之DataGrid使用
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<span class="link_postdate">2013-06-25 22:28</span>
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背景介绍:
原先项目采用普通的jsp页面来做为前端显示,用户体验差,并且为了实现某一种效果需要编写大量的js代码。因此寻找可以逐步替代前端显示的框架,逐渐转变为富客户端开发。通过上网查阅资料,并结合业务需要,发现extjs过于庞大,而easyui小巧并且功能也很强大。于是采用EasyUI的方式尝试在一个功能上使用。功能如下:
用户点击提交时,弹出模态窗口,该模态窗口内容支持异步获取表格内容,同时支持某个表格的单元格进行编辑。并且支持复选,最后将选择的内容提交到后台。
一、引入EasyUI框架
Easyui的引入非常简单。只需要在页面中加入如下js便可以工作。
- <span style="font-family:SimHei;font-size:18px;"><script type="text/javascript" src="<%=request.getContextPath() %>/js/jquery-1.8.3.js"></script>jquery包
- <script type="text/javascript" src="<%=request.getContextPath() %>/js/jquery-easyui-1.3.3/jquery.easyui.min.js"></script> easyui开发包
- <script type="text/javascript" src="<%=request.getContextPath() %>/js/jquery-easyui-1.3.3/locale/easyui-lang-zh_CN.js"></script>解决中文乱码包,不同的语言只要加入local下对应的js
- <link rel="stylesheet" type="text/css" href="<%=request.getContextPath() %>/js/jquery-easyui-1.3.3/themes/default/easyui.css"> 全局easyui css样式包
- <link rel="stylesheet" type="text/css" href="<%=request.getContextPath() %>/js/jquery-easyui-1.3.3/themes/icon.css">全局easyui 图标样式包</span>
二、使用dialog实现模态弹出框
代码如下:
- <div id="dlg" <span style="color:#ff0000;">class="easyui-dialog"</span> title="详细信息" style="730px;height:340px;padding:10px"
- data-options="
- buttons: [{
- text:'提交',
- iconCls:'icon-ok',
- handler:function(){
- alert('ok');
- }
- },{
- text:'取消',
- handler:function(){
- $('#dlg').dialog('close');
- }
- }]
- ">
- </div>
请大家注意上述代码红色部分,一定要写成easyui-dialog,easyui会根据该标识初始化一个dialog对象 。
效果如下:
三、采用Datagrid实现表格数据绑定
代码如下:
- <%@ page language="java" contentType="text/html; charset=UTF-8"
- pageEncoding="UTF-8"%>
- <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
- <html>
- <head>
- <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
- <title>Insert title here</title>
- <script type="text/javascript" src="<%=request.getContextPath() %>/js/jquery-1.8.3.js"></script>
- <script type="text/javascript" src="<%=request.getContextPath() %>/js/jquery-easyui-1.3.3/jquery.easyui.min.js"></script>
- <script type="text/javascript" src="<%=request.getContextPath() %>/js/jquery-easyui-1.3.3/locale/easyui-lang-zh_CN.js"></script>
- <link rel="stylesheet" type="text/css" href="<%=request.getContextPath() %>/js/jquery-easyui-1.3.3/themes/default/easyui.css">
- <link rel="stylesheet" type="text/css" href="<%=request.getContextPath() %>/js/jquery-easyui-1.3.3/themes/icon.css">
- </head>
- <body>
- <div id="dlg" <span style="color:#ff0000;">class="easyui-dialog"</span> title="详细信息" style="740px;height:350px;padding:10px"
- data-options="
- buttons: [{
- text:'提交',
- iconCls:'icon-ok',
- handler:function(){
- alert('ok');
- }
- },{
- text:'取消',
- handler:function(){
- $('#dlg').dialog('close');
- }
- }]
- ">
- <table id="dg" class="easyui-datagrid" title="数据" style="700px;height:250px"
- data-options="
- rownumbers:true,
- singleSelect:false,
- url:'<%=request.getContextPath() %>/js/jquery-easyui-1.3.3/demo/datagrid/datagrid_data1.json'
- ">
- <thead>
- <tr>
- <th data-options="field:'ck',checkbox:true"></th>
- <th data-options="field:'itemid',80">Item ID</th>
- <th data-options="field:'productid',100">Product</th>
- <th data-options="field:'listprice',80,align:'right'">List Price</th>
- <th data-options="field:'unitcost',80,align:'right'">Unit Cost</th>
- <th data-options="field:'attr1',220">Attribute</th>
- <th data-options="field:'status',60,align:'center'">Status</th>
- </tr>
- </thead>
- </table>
- </div>
- </body>
- </html>
请大家注意上面代码红色部分,告诉easyui初始化一个datagrid对象。
效果如下:
四、实现编辑Product列
使用easyui内置formatter函数,在表示datagrid表格对应product列头增加如下代码:
- <span style="font-size:18px;"><th data-options="field:'productid',100, formatter:formatProduct">Product</th></span>
- <span style="font-size:18px;">function formatProduct(val,row,index){
- return "<input type='text' id='ch'"+row.itemid+" value='0' ></input>"</span>
- <span style="font-size:18px;">}</span>
五、为DataGrid添加footer
该footer相当于表格底部信息,一般做统计信息,需要给datagrid的data-options增加一个显示footer的属性,这里需要注意:由于datagrid绑定的是json数据,因此json格式需要包含footer信息。代码如下,注意红色部分和json数据(后面会补充上):
- <span style="font-size:18px;"><table id="dg" class="easyui-datagrid" title="数据" style="700px;height:250px"
- data-options="
- rownumbers:true,
- singleSelect:false,
- <span style="color:#ff0000;">showFooter: true,</span>
- url:'<%=request.getContextPath() %>/js/jquery-easyui-1.3.3/demo/datagrid/datagrid_data2.json'
- ">
- <thead>
- <tr>
- <th data-options="field:'ck',checkbox:true"></th>
- <th data-options="field:'itemid',80">Item ID</th>
- <th data-options="field:'productid',150, formatter:formatProduct">Product</th>
- <th data-options="field:'listprice',80,align:'right'">List Price</th>
- <th data-options="field:'unitcost',80,align:'right'">Unit Cost</th>
- <th data-options="field:'attr1',170">Attribute</th>
- <th data-options="field:'status',60,align:'center'">Status</th>
- </tr>
- </thead>
- </table></span>
效果如下:
大家可以看到多出来了footer但是好像不是很美观,我们稍微作下处理,将formatProduct函数内容改写下,代码如下:
- <span style="font-size:18px;">function formatProduct(val,row,index){
- if(<span style="color:#ff0000;">"undefined" != typeof(row.productid)</span>){
- return "<input type='text' id='ch'"+row.itemid+" value='0' ></input>";
- }
- }</span>
效果如下:
总结
本实例中省略了一些内容,包括提交,取消,选择checkbox时,进行product的求和,同后台的交互(完全jQuery异步请求)。做为EasyUI入门的因子,希望对初学的人能有所帮助。
有footer的json数据如下,这个也很重要,如果json数据格式不正确将无法出现上述效果:
- {"total":28,"rows":[
- {"productid":"FI-SW-01","unitcost":10.00,"status":"P","listprice":36.50,"attr1":"Large","itemid":"EST-1"},
- {"productid":"K9-DL-01","unitcost":12.00,"status":"P","listprice":18.50,"attr1":"Spotted Adult Female","itemid":"EST-10"},
- {"productid":"RP-SN-01","unitcost":12.00,"status":"P","listprice":28.50,"attr1":"Venomless","itemid":"EST-11"},
- {"productid":"RP-SN-01","unitcost":12.00,"status":"P","listprice":26.50,"attr1":"Rattleless","itemid":"EST-12"},
- {"productid":"RP-LI-02","unitcost":12.00,"status":"P","listprice":35.50,"attr1":"Green Adult","itemid":"EST-13"},
- {"productid":"FL-DSH-01","unitcost":12.00,"status":"P","listprice":158.50,"attr1":"Tailless","itemid":"EST-14"},
- {"productid":"FL-DSH-01","unitcost":12.00,"status":"P","listprice":83.50,"attr1":"With tail","itemid":"EST-15"},
- {"productid":"FL-DLH-02","unitcost":12.00,"status":"P","listprice":63.50,"attr1":"Adult Female","itemid":"EST-16"},
- {"productid":"FL-DLH-02","unitcost":12.00,"status":"P","listprice":89.50,"attr1":"Adult Male","itemid":"EST-17"},
- {"productid":"AV-CB-01","unitcost":92.00,"status":"P","listprice":63.50,"attr1":"Adult Male","itemid":"EST-18"}
- ],"footer":[
- {"unitcost":19.80,"listprice":60.40,"itemid":"Average:"},
- {"unitcost":198.00,"listprice":604.00,"itemid":"Total:"}
- ]}
另外大家可以去EasyUI的官网学习:http://www.jeasyui.com/,最新的api提供了更简便的操作。
偶尔会出现官网上不去的情况,请参看国内的网址,缺点是api不是最新:http://www.phptogether.com/juidoc/
后续会补充上datagrid的分页,datagrid掌握后并有jquery的基础可以说easyui就会用了,期待学习EasyUI的朋友能够发掘更多实用的技术。
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