如何动态添加删除表单认证

我有一个form

var AddFormPanel = new Ext.form.FormPanel({
width: 715,
height: 260,
plain: true,
layout: "form",
labelWidth: 75,
cls: 'x-formpanelleft',
labelAlign: "left",
//锚点布局-
defaults: { anchor: "95%", msgTarget: "side" },
buttonAlign: "center",
bodyStyle: "padding:15 5 0 20",
reader: new Ext.data.JsonReader({ root: 'data' },
[{ name: 'formUserName', mapping: 'UserName', type: 'string' },
{ name: 'formEmail', mapping: 'Email', type: 'string' },
{ name: 'cb-Intitution', mapping: 'Institution', type: 'string' },
{ name: 'cb-Order', mapping: 'Order', type: 'string' },
{ name: 'cb-Invoice', mapping: 'Invoice', type: 'string' },
{ name: 'cb-Setting', mapping: 'Setting', type: 'string' },
{ name: 'cb-Manage', mapping: 'Manage', type: 'string' },
{ name: 'ID', mapping: 'ID', type: 'string' }
]),

    items: [{
        name: "formUserName",
        id: 'formUserName',
        xtype: "textfield",
        fieldLabel: "UserName",
        maxLength: 50,
        allowBlank: false,
        blankText: "不允许为空"
    }, {
        name: "formPassWord",
        id: 'formPassWord',
        xtype: "textfield",
        fieldLabel: "PassWord",
        maxLength: 50
    }, {
        name: "formEmail",
        id: 'formEmail',
        xtype: "textfield",
        fieldLabel: "Email",
        maxLength: 150,
        allowBlank: false,
        blankText: "不允许为空"
    }, {
        layout: 'column',
        border: false,
        // defaults are applied to all child items unless otherwise specified by child item
        defaults: {
            columnWidth: '.2',
            border: false
        },
        items: individual
    }, {
        xtype: "hidden",
        name: "ID",
        id: 'ID'

}]

    });

我想在加载数据(也就是edit)的时候,把password设置成可以为空,但在添加的时候把password设置成不可以为空.

就是在
AddFormPanel.form.load({
url: '/Url/Manage/UserEditLoad.aspx?id=' + rows.get('ID'),
waitMsg: '正在载入数据...',
failure: function(form, action) {
Ext.MessageBox.alert('编 辑', '载入失败！');
}
});
的时候把password设置成可以为空

在
tbar: [
new Ext.Toolbar.Fill()
, {
text: "Add",
//默认样式为按下
//pressed:true,
tooltip: "Add",
iconCls: "addicon",
handler: AddDetail
的时候把password设置成不可以为空

在add/edit里面直接修改allowBlank的值

默认为可以为空. 直接由JS验证
在点添加的时候由ID 'formPassWord'获取password值,判断不能为空,alert提示..
在点编辑的时候...就不用判断password了..

最好分开做,好弄一点