Extjs 控制grid、editorgrid动态添加、删除行

1.对Grid进行删除function() {     var _grid = Ext.getCmp("id_of_grid");     var content = _grid.getSelectionModel().getSelected();                           //取得选择的那一行     if (content != null) {      store.remove(content);                                                                       //grid的数据是store,修改store就能修改显示的数据     } else {      Ext.MessageBox.alert("系统提示", "请选择要删除的数据！！！");     }     if (store.getCount() <= 0) {      Ext.getCmp("departmentid").enable();     }}2.对Grid进行增加, 并验证增加内容是否合法1>对Ext.GridPanel进行增加 add = function(){  var rec; var id; var gridStore = Ext.getCmp("eGrid").store;var plant = Ext.getCmp("eGrid").store.recordType;                            //与record.create一致 var _rs = new plant({                                                                      //增加的数据    id:6,    name:'小兰',    email:'[e-mail]',    sex:'女',    bornDate:'1993-3-7'   }); var len = gridStore.getCount();  for (var i = 0; i < len; i++) {  if (_rs.get("id") == gridStore.getAt(i)    .get("id")) {   Ext.Msg.alert("提示", "该ID已经存在，不能重复录入！");   return;  } } if (_rs.get("id") > 100 || _rs.get("id") < 1) {  Ext.Msg.alert("提示", "ID错误");  return; } Ext.getCmp("eGrid").store.add(_rs);                                     //往store里添加一项}

2>对Ext.EditorGridPanel进行增加 listeners :{  validateedit : check                                                               //注意:不是afteredit }check = function(obj){ if (obj.field =="id"){  var oldValue = obj.originalValue;  var gridStore = Ext.getCmp("eGrid").store;  var newValue = obj.value;  var len = gridStore.getCount();    for (var i = 0; i < len; i++) {   if (newValue == gridStore.getAt(i).get("id")) {    Ext.Msg.alert("Message", "The ID you input is Exsiting!");    return false;   }  }   if (newValue > 100 || newValue < 1)  {   Ext.Msg.alert("Message", "The ID should 1~100!");   return false;  } }}