extjs中页面向后台传值

一般都用combobox
var ctype = new Ext.data.SimpleStore({
fields: [{ name: 'type', type: 'int' },
{ name: 'desc', type: 'string' }
],
data: [
[1,'身份证'],
[2,'护照'],
……
]
});
var psel = Ext.create('Ext.form.ComboBox', {
store: ctype,

name: 'card',
fieldLabel: '证件类型',
labelWidth: 70,
value: 1,

queryMode: 'local',
valueField: 'type',
displayField: 'desc',
allowBlank: false,
forceSelection: true
});

value="1" submit表单提交