如何在dart类中检测聚合物按钮是否已被单击

我希望能够捕捉纸张按钮上的点击事件并更改“clic me”文本

my-module.html：

<dom-module id="my-module">
 <template>
  <paper-button>{{btnTxt}}</paper-button>
 </template>
 <script type="application/dart" src="my-module.dart"></script>
</dom-module>

//Adding the 'on-tap' tag with the dart methode name attribute, can also use 'on-click'
<paper-button on-tap="btnClicked">{{btnTxt}}</paper-button>

---

好的，要执行此操作，您必须将其添加到以下文件中：

my-module.html：

<dom-module id="my-module">
 <template>
  <paper-button>{{btnTxt}}</paper-button>
 </template>
 <script type="application/dart" src="my-module.dart"></script>
</dom-module>

//Adding the 'on-tap' tag with the dart methode name attribute, can also use 'on-click'
<paper-button on-tap="btnClicked">{{btnTxt}}</paper-button>