如何为 md-radio-button 设置 active class？

Question

如何为 Angular Material 中的元素 md-radio-button 设置活动 class？

Answer 1

https://plnkr.co/edit/oL53j2Zqku3BkVVMzhNe?p=preview

<md-radio-group>
  <md-radio-button value="1">Option 1</md-radio-button>
  <md-radio-button #rb [class.custom-class]="rb.checked" value="2">Option 2</md-radio-button>
</md-radio-group>

如何为 md-radio-button 设置 active class？

How to set active class for md-radio-button?

angular-material2

angular