带有辅助按钮的mat-nav-list

Question

我们如何在mat-nav-list内正确添加辅助按钮？

这是我的示例：

<mat-nav-list>
  <h3 matSubheader>This is the listview</h3>
    <a mat-list-item [routerLink]="['/detail']">
        <span matLine>Title</span>
        <button mat-icon-button (click)="onAdd()">
        <mat-icon>add</mat-icon>
    </button>
        <button mat-icon-button (click)="onRemove()">
        <mat-icon>delete</mat-icon>
    </button>
    </a>
</mat-nav-list>

在这段代码中，我希望onAdd()or onRemove()可以单独执行，但是页面随后会导航。

工作演示

Answer 1

在函数中，您可以添加参数（$event）并调用Event.preventDefault，以防止发生默认操作（在这种情况下，链接到其他链接）Event.stopImmediatePropagation。

以下是一些示例代码：

<mat-nav-list>
    <h3 matSubheader>This is the listview</h3>
    <a mat-list-item [routerLink]="['/detail']">
        <span matLine>Title</span>
        <button mat-icon-button (click)="onAdd($event)">
            <mat-icon>add</mat-icon>
        </button>
        <button mat-icon-button (click)="onRemove($event)">
            <mat-icon>delete</mat-icon>
        </button>
    </a>
</mat-nav-list>

onAdd(event: Event) {
    event.preventDefault();
    // EDIT: Looks like you also have to include Event#stopImmediatePropogation as well
    event.stopImmediatePropagation();
    // ...
}
onRemove(event: Event) {
    event.preventDefault();
    // EDIT: Looks like you also have to include Event#stopImmediatePropagation as well
    event.stopImmediatePropagation();
    // ...
}