Angular Routing 🌐

Angular routing is a powerful feature that allows you to navigate between different components or modules within your Angular application. It provides a seamless user experience by dynamically updating the content without reloading the entire page.

Path vs Query Parameters

• For more detail, read this Medium article by @AveryCS

1. Path Parameters 📍

1.1 Passing path parameter in routes:

<a [routerLink] = ['book', bookID, 'author', authorID]>

const routes: Routes = [
    {path: 'books/:boodID/author/:authorID', component: BookComponent}
]

1.2 Retrieving path parameter from routes:

There are two ways for retrieving the path param from the routes:

• snapshot (for static route till the component is active and no change in route)

• observable (for dynamic route)

• Using snapshot 📸

this.bookIDfromRoutes = this.routes.snapshot.paramMap.get('bookID')
this.bookIDfromRoutes = this.routes.snapshot.params['bookID']

• Using observable 📡

this.routes.paramMap.subscribe(params => {
    this.bookIDfromRoutes = params.get('bookID')
})

this.routes.params.subscribe(params => {
    this.bookIDfromRoutes = params['bookID']
})

2. Query Parameters 🔍

2.1 Passing query parameter in routes:

<a [routerLink] = "['product']" [queryParams]={search: searchValue}>

const routes: Routes = [
    {path: 'product', component: ProductComponent}
]

2.2 Retrieving query parameter from routes:

There are two ways for retrieving the path param from the routes:

• snapshot (for static route till the component is active and no change in route)

• observable (for dynamic route)

• Using snapshot 📸

this.product = this.routes.snapshot.queryParamMap.get('search')
this.product = this.routes.snapshot.queryParams['search']

• Using observable 📡

this.routes.queryParamMap.subscribe(params => {
    this.product = params.get('search')
})

this.routes.queryParams.subscribe(params => {
    this.product = params['search']
})

3. Lazy Loading 🔁

Angular only loads modules as needed, rather than loading all modules when the application launches.

How to Clone and Run this Project 🖥️

1. Clone the repository:

git clone https://github.com/mohitjaiswal28/Routing-Angular.git

2. Navigate to the project directory:

cd Routing-Angular

3. Install the dependencies:

npm install

4. Run the application:

ng serve