绑定到一个纸切换按钮
问题描述:
我有一个.html文件如下声明:绑定到一个纸切换按钮
<paper-toggle-button
id = 'tglBtn'
on-change = '{{ address.sameAddress }}'
on-mouseout = '{{ onChangeToggleBtnHandler }}'>
</paper-toggle-button>
class Address extends Observable
{
@observable
bool sameAddress = false;
}
上执行的应用程序提供了以下堆栈跟踪:
Exception: Uncaught Error: type 'bool' is not a subtype of type 'Function' of 'f'.
Stack Trace:
#0 minArgs (package:smoke/src/common.dart:53:22)
#1 GeneratedObjectAccessorService.invoke (package:smoke/static.dart:131:24)
#2 invoke (package:smoke/smoke.dart:43:41)
#3 HtmlElement&Polymer.dispatchMethod (package:polymer/src/instance.dart:1054:19)
#4 BindingDelegate&PolymerEventBindings.getEventHandler.<anonymous closure> (package:polymer/src/events.dart:82:32)
#5 _RootZone.runUnaryGuarded (dart:async/zone.dart:1020)
#6 _RootZone.bindUnaryCallback.<anonymous closure> (dart:async/zone.dart:1049)
#7 BindingDelegate&PolymerEventBindings.prepareEventBinding.<anonymous closure>.<anonymou
这似乎是访问是通过某种形式的JavaScript。
台关闭>(包:聚合物/ SRC/events.dart:101:67)
答
on-Change
是一个事件。您只能将事件处理程序绑定到它,而不是属性。
有没有办法将切换按钮的状态直接绑定到属性。 – 2014-10-05 13:55:15
当您切换切换时,'checked'属性被设置为'true'或'false'。 – 2014-10-05 15:20:48