javascript - Angular 7 - 使用 ngFor 将数组中的最后一项设为链接

Question

我有一个菜单项列表，我想将数组中的最后一项设为链接。

现在菜单项是从一个组件构建的，但我不确定如何使数组中的最后一项成为链接。

ActionMenuItem.component.html

  <div *ngIf="expanded">
  <actionmenuitem *ngFor="let child of line.children" [line]="child" (inWorkspace)="toWorkspace($event)"></actionmenuitem>

ActionMenuItem.Component.ts

  onSelect(){
// If it has children, expand them && flip carat.
if(this.line.children.length > 0){

  this.expanded = !this.expanded;

  if(this.iconName == "expand_more"){
    this.iconName = "expand_less"
  } else {
    this.iconName = "expand_more"
  }

} else {
  this.inWorkspace.emit(this.line);
}

标签： javascriptangulartypescriptangular7angular8

Answer 1

试试这样：

工作演示

<ng-container *ngFor="let child of line.children;let i=index">

    <actionmenuitem *ngIf="i != (line.children.length-1)" [line]="child" (inWorkspace)="toWorkspace($event)">
    </actionmenuitem>

    <a [routerLink]="[child]" *ngIf="i == (line.children.length-1)">{{child}}</a>
</ng-container>