easyui datagrid 行编辑功能

datagrid现在具有行编辑能力了，使用时只须在columns中为需要编辑的列添加一个editor属性，编辑保存时同时具有数据校验能力。

看一个例子效果图：

　　代码如下：

$('#tt').datagrid({

    title:'Editable DataGrid',

    iconCls:'icon-edit',

    width:660,

    height:250,

    singleSelect:true,

    idField:'itemid',

    url:'datagrid_data.json',

    columns:[[

        {field:'itemid',title:'Item ID',width:60},

        {field:'productid',title:'Product',width:100,

            formatter:function(value){

                for(var i=0; i<products.length; i++){

                    if (products[i].productid == value) return products[i].name;

                }

                return value;

            },

            editor:{

                type:'combobox',

                options:{

                    valueField:'productid',

                    textField:'name',

                    data:products,

                    required:true

                }

            }

        },

        {field:'listprice',title:'List Price',width:80,align:'right',editor:{type:'numberbox',options:{precision:1}}},

        {field:'unitcost',title:'Unit Cost',width:80,align:'right',editor:'numberbox'},

        {field:'attr1',title:'Attribute',width:150,editor:'text'},

        {field:'status',title:'Status',width:50,align:'center',

            editor:{

                type:'checkbox',

                options:{

                    on: 'P',

                    off: ''

                }

            }

        },

        {field:'action',title:'Action',width:70,align:'center',

            formatter:function(value,row,index){

                if (row.editing){

                    var s = '<a href="#" onclick="saverow('+index+')">Save</a> ';

                    var c = '<a href="#" onclick="cancelrow('+index+')">Cancel</a>';

                    return s+c;

                } else {

                    var e = '<a href="#" onclick="editrow('+index+')">Edit</a> ';

                    var d = '<a href="#" onclick="deleterow('+index+')">Delete</a>';

                    return e+d;

                }

            }

        }

    ]],

    onBeforeEdit:function(index,row){

        row.editing = true;

        $('#tt').datagrid('refreshRow', index);

    },

    onAfterEdit:function(index,row){

        row.editing = false;

        $('#tt').datagrid('refreshRow', index);

    },

    onCancelEdit:function(index,row){

        row.editing = false;

        $('#tt').datagrid('refreshRow', index);

    }

});