form取值

var form = this.up('form').getForm();//获取表单对象
var field=form.findField("cloudSubsriberId");//表单取值“id:'cloudSubsriberId'”
var value=field.getValue();
if (null == value || value.length == 0) {
Ext.Msg.alert('List users', 'cloudSubsriberId is null');
} else {
getCSUsers(value);
}