Angular 7 - Make Last Item in Array A Link Using ngFor

user_5091483 0
Viewed 1500

I have a list of menu items and I want to make the last item in the array a link.

Right now the menu items are built from a component, but I'm unsure of how to make the last item in the array a link.

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);
}
angular7 angular8 angular typescript javascript
3 Answers

Try like this:

Working Demo

<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>
user_76031090

Angular exposes the following variables which you can make use of:

  • first
  • last
  • even
  • index
  • odd

So to make the the last item a link you can do this

<div *ngFor="let child of line.children; let last = islast">
   <actionmenuitem *ngIf="islast" [line]="child" 
(inWorkspace)="toWorkspace($event)">
    </actionmenuitem>
</div>
user_47040890

you just need to fix last flag assignment:

  • let isLast = last or
  • last as isLast
user_102701730
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