easyUI在可编辑的datagrid中计算两列的值

在这个教程中你将学习如何包含一个运算的列在可编辑的datagrid中,一个运算列通常包含一些运算值从一个或多个其他列.

查看Demo

首先,创建一个可编辑的datagrid,这就是我们创建的一些可编辑列,'listprice','amount' 和'unitcost' 列定义为numberbox 编辑类型,运算列是 'unitcost'字段,

将是 listprice 乘以 amount列的结果.

[html] view plaincopyprint?

1. <tableid="tt"style="width:600px;height:auto"   
2.         title="Editable DataGrid with Calculated Column"iconCls="icon-edit"singleSelect="true"   
3.         idField="itemid"url="data/datagrid_data.json">   
4.     <thead>   
5.         <tr>   
6.             <thfield="itemid"width="80">Item ID</th>   
7.             <thfield="listprice"width="80"align="right"editor="{type:'numberbox',options:{precision:1}}">List Price</th>   
8.             <thfield="amount"width="80"align="right"editor="{type:'numberbox',options:{precision:0}}">Amount</th>   
9.             <thfield="unitcost"width="80"align="right"editor="numberbox">Unit Cost</th>   
10.             <thfield="attr1"width="150"editor="text">Attribute</th>   
11.             <thfield="status"width="60"align="center"editor="{type:'checkbox',options:{on:'P',off:''}}">Status</th>   
12.         </tr>   
13.     </thead>   
14. </table>   

<table id="tt" style="width:600px;height:auto"          title="Editable DataGrid with Calculated Column" iconCls="icon-edit" singleSelect="true"          idField="itemid" url="data/datagrid_data.json">      <thead>          <tr>              <th field="itemid" width="80">Item ID</th>              <th field="listprice" width="80" align="right" editor="{type:'numberbox',options:{precision:1}}">List Price</th>              <th field="amount" width="80" align="right" editor="{type:'numberbox',options:{precision:0}}">Amount</th>              <th field="unitcost" width="80" align="right" editor="numberbox">Unit Cost</th>              <th field="attr1" width="150" editor="text">Attribute</th>              <th field="status" width="60" align="center" editor="{type:'checkbox',options:{on:'P',off:''}}">Status</th>          </tr>      </thead>  </table>  

当用户点击一行的时候,我们开始一个编辑动作.

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1. var lastIndex;   
2. $('#tt').datagrid({   
3.     onClickRow:function(rowIndex){   
4.         if (lastIndex != rowIndex){   
5.             $('#tt').datagrid('endEdit', lastIndex);   
6.             $('#tt').datagrid('beginEdit', rowIndex);   
7.             setEditing(rowIndex);   
8.         }   
9.         lastIndex = rowIndex;   
10.     }   
11. });   

var lastIndex;  $('#tt').datagrid({      onClickRow:function(rowIndex){          if (lastIndex != rowIndex){              $('#tt').datagrid('endEdit', lastIndex);              $('#tt').datagrid('beginEdit', rowIndex);              setEditing(rowIndex);          }          lastIndex = rowIndex;      }  });  

创建运算关系在一些列之间,我们应该得到editors和绑定一些事件到他们上面.

[javascript] view plaincopyprint?

1. function setEditing(rowIndex){   
2.     var editors = $('#tt').datagrid('getEditors', rowIndex);   
3.     var priceEditor = editors[0];   
4.     var amountEditor = editors[1];   
5.     var costEditor = editors[2];   
6.     priceEditor.target.bind('change',function(){   
7.         calculate();   
8.     });   
9.     amountEditor.target.bind('change',function(){   
10.         calculate();   
11.     });   
12.     function calculate(){   
13.         var cost = priceEditor.target.val() * amountEditor.target.val();   
14.         $(costEditor.target).numberbox('setValue',cost);   
15.     }   
16. }   

function setEditing(rowIndex){      var editors = $('#tt').datagrid('getEditors', rowIndex);      var priceEditor = editors[0];      var amountEditor = editors[1];      var costEditor = editors[2];      priceEditor.target.bind('change', function(){          calculate();      });      amountEditor.target.bind('change', function(){          calculate();      });      function calculate(){          var cost = priceEditor.target.val() * amountEditor.target.val();          $(costEditor.target).numberbox('setValue',cost);      }  }  

下载 EasyUI 示例代码:

easyui-datagrid-demo.zip