angular2-changedetection Questions
1
Solved
I have a scenario where I have two components sitting alongside each other, ComponentA and ComponentB. They both use a service Service.
ComponentB contains a button which will make a property in S...
Berg asked 29/4, 2019 at 13:55
1
Solved
I haven't been able to make a minimal reproduction I can put in a plunkr, but in my app I have an infinite loop where ngDoCheck in the root component is called infinitely, so I'd like to be able to...
Sorilda asked 31/3, 2017 at 20:22
4
Solved
I use Bootstrap for my layout and I need to check if the automatic calculated size of my div with bootstrap for example width = 25% is changed.
How to perform change detection on a attribute which ...
Thebault asked 18/4, 2016 at 13:47
4
Solved
I have a data table component ( angular2-data-table ) project where we changed the project from Angular's traditional change detection to OnPush for optimized rendering speeds.
Once the new change...
Fidelity asked 27/11, 2016 at 14:21
2
Solved
I'm trying to automatically select the first value from set of options in <mat-autocomplete ...>
export class ExampleComponent implements OnInit, AfterViewInit {
@ViewChildren('auto') matAu...
Pentha asked 2/1, 2018 at 14:1
2
I did a loading-spinner component in my Angular app. I placed it in the app component next to the router-outlet with *ngIf="isLoading" so i could make it visible from everywhere in the application....
Destroy asked 30/7, 2018 at 8:36
4
Solved
I have two component: ParentComponent > ChildComponent and a service, e.g. TitleService.
ParentComponent looks like this:
export class ParentComponent implements OnInit, OnDestroy {
title: s...
Cuprite asked 20/6, 2017 at 14:23
5
Solved
I have pure pipe TranslatePipe that translates phrases using LocaleService that has locale$: Observable<string> current locale. I also have ChangeDetectionStrategy.OnPush enabled for all my c...
Mooneye asked 26/1, 2017 at 8:20
1
Solved
Been running into this one issue and scouring the internet about fixture.detectChanges() where it does not recognize changes in @Input() when explicitly inserting mock data. There are tons of threa...
Booker asked 10/8, 2017 at 22:54
2
Solved
The question
Is Angular designed to constantly re-check everything in order to detect changes? I'm coming from the React world and I was expect something like event triggered -> re-rendering. I...
Gwenngwenneth asked 25/6, 2018 at 11:5
1
Solved
I'm trying to create a PowerShell script to open Internet Explorer, navigate to https://clockify.me/login , fill in the email and password inputs and submit the form or click the log in button.
Th...
Coverlet asked 7/6, 2018 at 16:37
2
Solved
I understood how change detection works in Angular 5.0.
Can some one help me to understand how the same works in React and how much it was different from Angular's ?
Kin asked 20/11, 2017 at 6:47
1
Solved
What is the best way to use OnPush change detection to make flexible in changing and also quite straightforward in testing? Going through various tutorials I have found to approach to use OnPush:
...
Lovesick asked 24/5, 2018 at 6:31
3
Solved
https://stackblitz.com/edit/angular-xpamld
Question: Can someone help me understand why my prototype's changeDetection: ChangeDetectionStrategy.OnPush still allows me to update the inner value nam...
Formant asked 4/2, 2018 at 7:19
2
Solved
I have this pipe which multiplies the input value by an other value retrieved from a service:
@Pipe({
name: 'multiply'
})
export class MultiplyPipe implements PipeTransform {
constructor(private...
Threnode asked 17/1, 2018 at 14:18
1
Solved
I have an HttpClient service which is updating the data at backend. During the processing at backend, I' am displaying a loading state by doing this.isLoading = true, and after the successfully pro...
Kiruna asked 29/9, 2017 at 18:24
4
Solved
I'm writing an Angular component that has a property Mode(): string.
I would like to be able to set this property programmatically not in response to any event.
The problem is that in the absence...
Rains asked 16/1, 2016 at 13:9
2
Solved
Angular 4. Github source
I have a menu which is filled by a web service. The web service is in taskService, but is not necessary now.
ngOnInit() {
this.getTasks();
}
getTasks(): void {
this...
Habitue asked 20/12, 2017 at 19:31
3
This is a notorious error, which has a quite a "following" among developers, however it is also known to be quite tricky to debug. The log like this
PersonalSituationComponent.html:3 ERROR Error: ...
Pimental asked 25/10, 2017 at 12:48
2
Solved
Say, I have a component which is used as following:
<health-renderer
[health]="getHealth()"
[label]="label">
<health-renderer>
After reading data-binding related parts from https...
Goosander asked 14/10, 2017 at 22:23
1
Solved
I'm having a look to the example-app defined in the ngrx repo:
https://github.com/ngrx/platform/tree/master/example-app
I can see that the ChangeDetectionStrategy.OnPush property is set only on "c...
Scullery asked 28/9, 2017 at 12:44
1
Solved
Here's an example:
@Component({
selector: 'my-app',
template: `
<div>
<h1>{{ foo }}</h1>
<bpp [(foo)]="foo"></bpp>
</div>
`,
})
export class App {
foo;...
Androsterone asked 6/9, 2017 at 1:37
1
Solved
I have a child Calendar Component that receives events from his father through an input field.
@Input() private events: any[];
When the month changes the parent gets new events from an API Servi...
Pouched asked 29/8, 2017 at 15:33
1
Solved
I don't understand why even if I use ChangeDetectionStrategy.OnPush and changeDetectorRef.detach() the function ngDoCheck keep been called.
I have thousands of components in my app, and I'd like to...
Childers asked 10/8, 2017 at 13:59
1
Solved
Lets say i have a component structure like this:
AppComponent
HeaderComponent
ContentComponent
TodosComponent
TodoComponent
If I set HeaderComponent's changeDetection to ChangeDetectionStrat...
Hefty asked 5/8, 2017 at 11:53
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