Ext js Grid

 Ext.onReady(function () {                   var proxy = new Ext.data.HttpProxy({                  url: '/Mamage/Dept/JsonResult?pagesize=1'                }); //定义reader                var reader = new Ext.data.JsonReader(    {     }, [                { name: 'id', mapping: 'id' },                { name: 'deptName' },            //如果name与mapping同名,可以省略mapping                { name: 'add_time' },                 { name: 'rntroduce' }                ]             )            //构建Store                   var store = new Ext.data.Store({                    proxy: proxy,                    reader: reader                                  });                //载入              store.load();                // create the grid                var grid = new Ext.grid.GridPanel({                    store: store,                    columns: [                        { header: "编号", width: 60, dataIndex: 'id', sortable: true },                        { header: "部门名称", width: 150, dataIndex: 'deptName', sortable: true },                        { header: "添加时间", width: 150, dataIndex: 'add_time', sortable: true },                        { header: "介绍", width: 150, dataIndex: 'rntroduce', sortable: true }                    ],                    renderTo: 'grid_list',                    width: 850,                    height: 400                });
            });