How to destroy a component when we move to another component in angular 6?
Solution 1
You can use nativeElement.remove() method to physically remove element. So your code could look as follows:
Make sure to put it in ngOndestroy method
export class YourComponent {
constructor(private elementRef: ElementRef) {
}
ngOndestroy() {
this.elementRef.nativeElement.remove();
}
}
Update:
Since you using router you need to change your router order like this
{path: '', component: HomepageComponent }
{path: 'ide',component: OnlineideComponent},
Solution 2
You can use HostListener and it will remove/clear the component when that page is unloaded.
@HostListener('unloaded')
ngOnDestroy() {
console.log('Cleared');
}
mahbubcseju
I have a great enthusiasm on programming and learning various algorithms. I have solved more than 2000 programming problems in different online judges. I have participated in more than 200 different programming contests (online/onsite). I always love problem solving as well as creation of programming challenges.
Updated on June 08, 2022Comments
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mahbubcseju almost 2 years
In angular 6, let we have three component x,y,z . I am in now at x component. But when I go to component y and return back to x, there is still the previous x component in the DOM. But I want to delete the previous instance of x.That means I want only one intstance of a component at a time in DOM.How to do that ?
My Router config part :
import { NgModule } from '@angular/core'; import { Routes, RouterModule } from '@angular/router'; import { OnlineideComponent} from './onlineide/onlineide.component'; import {HomepageComponent} from './homepage/homepage.component'; const routes: Routes = [ {path: 'ide',component: OnlineideComponent}, {path: '', component: HomepageComponent } ]; @NgModule({ imports: [RouterModule.forRoot(routes)], exports: [RouterModule] }) export class AppRoutingModule { }
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Tony Ngo almost 5 years@mahbubcseju how did you create a component ? are you dynamic create a component or just navigate between component using router
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mahbubcseju almost 5 yearsnavigate between component using router.
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Tony Ngo almost 5 yearsThen the component should be delete by itself. Can you show me the router config
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mahbubcseju almost 5 years{ path: 'my/path/', component: MyComponent } like that ? Actually I didn't get which is the router config .
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Tony Ngo almost 5 yearsPlease upload the router config code in your question. I think the main problem come from your router config
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mahbubcseju almost 5 yearsI have added router config code .please have a look .