NgxSimpleBreadcrumb

A tiny breadcrumb library for Angular. Under 40kb in size with no additional dependencies.

Add a breadcrumb to your Angular app in 5 minutes.

Demo App

To run the demo run the following from the root of the project:

npm start 

Test

To run the project tests run the following from the root of the project:

npm run test 

Versioning

Version	Compatible Angular Version
17.x.x	>=17.0.0
16.x.x	>=16.0.0

Quick Start

Installation

npm install ngx-simple-breadcrumb

Setup

Import NgxSimpleBreadcrumbModule in your app module.

app.module.ts

import { NgModule } from '@angular/core';
import { AppComponent } from './app.component';
import { RouterModule } from '@angular/router';
import { NgxSimpleBreadcrumbModule } from 'ngx-simple-breadcrumb';

@NgModule({
  declarations: [
    AppComponent
  ],
  imports: [
    ...
    NgxSimpleBreadcrumbModule,
    RouterModule.forRoot([
     ...
    ])
  ],
  providers: [],
  bootstrap: [AppComponent]
})
export class AppModule { }

Usage Example

1. Add the nxg-simple -breadcrumb component

app.component.html

<ngx-simple-breadcrumb>
  <ng-template let-breadcrumb>
    <a [routerLink]="breadcrumb.route">{{breadcrumb.label}}</a>
  </ng-template>
  <ng-template #separator> > </ng-template>
</ngx-simple-breadcrumb>

<router-outlet />

The first template defines each breadcrumb item. It can access the breadcrumb object by using let-breadcrumb.

The breadcrumb object contains the following properties

• label - as defined in the breadcrumb property of the route data object (see next step)
• route - the full path which can be used to build a link (as seen in example)
• isLast - whether or not the breadcrumb is the last in the trail

The second template defines the separator which will separate each breadcrumb item. It must be identified by the template reference variable #seperator.

These templates allow you the flexibility to add icons, images, styling etc. however you wish.

2. In your routing confing, add the breadcrumb property to the data object for each route you would like to appear in your breadcrumb.

This value will be made available in your template as breadcrumb.label.

app-routing.module.ts

[
  {
    path: 'child1',
    component: Child1Component,
    data: {breadcrumb: 'Child 1'},
    children:
    [{
      path: 'grandchild1',
      component: Grandchild1Component,
      data: { breadcrumb: 'Grandchild 1' },
    }]
  },
  {
    path: 'child2',
    component: Child2Component,
    data: {breadcrumb: 'Child 2'},
  }
]

Troubleshooting

Duplicate Breadcrumbs

Note the Angular behaviour that an empty path route inherits its parent's parameters and data.

This means if you add a breadcrumb to an empty path route (such as is common when lazy loading a module), its children will also inherit this breadcrumb and create duplicates. This can be avoided by only adding the breadcrumb data property to the children of empty path routes.