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RouterLinkActive

directive

Lets you add a CSS class to an element when the link's route becomes active.

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NgModule

Selectors

Properties

Property Description
links: QueryList<RouterLink>
linksWithHrefs: QueryList<RouterLinkWithHref>
isActive: boolean Read-Only
@Input()routerLinkActiveOptions: { exact: boolean; }
@Input()routerLinkActive: string | string[] Write-Only

Template variable references

Identifier Usage
routerLinkActive #myTemplateVar="routerLinkActive"

Description

This directive lets you add a CSS class to an element when the link's route becomes active.

Consider the following example:

<a routerLink="/user/bob" routerLinkActive="active-link">Bob</a>

When the url is either '/user' or '/user/bob', the active-link class will be added to the a tag. If the url changes, the class will be removed.

You can set more than one class, as follows:

<a routerLink="/user/bob" routerLinkActive="class1 class2">Bob</a>
<a routerLink="/user/bob" [routerLinkActive]="['class1', 'class2']">Bob</a>

You can configure RouterLinkActive by passing exact: true. This will add the classes only when the url matches the link exactly.

<a routerLink="/user/bob" routerLinkActive="active-link" [routerLinkActiveOptions]="{exact:
true}">Bob</a>

You can assign the RouterLinkActive instance to a template variable and directly check the isActive status.

<a routerLink="/user/bob" routerLinkActive #rla="routerLinkActive">
  Bob {{ rla.isActive ? '(already open)' : ''}}
</a>

Finally, you can apply the RouterLinkActive directive to an ancestor of a RouterLink.

<div routerLinkActive="active-link" [routerLinkActiveOptions]="{exact: true}">
  <a routerLink="/user/jim">Jim</a>
  <a routerLink="/user/bob">Bob</a>
</div>

This will set the active-link class on the div tag if the url is either '/user/jim' or '/user/bob'.

Methods

ngAfterContentInit(): void

Parameters

There are no parameters.

Returns

void

ngOnChanges(changes: SimpleChanges): void

Parameters
changes SimpleChanges
Returns

void

ngOnDestroy(): void

Parameters

There are no parameters.

Returns

void

© 2010–2019 Google, Inc.
Licensed under the Creative Commons Attribution License 4.0.
https://angular.io/api/router/RouterLinkActive