Recent questions tagged Angular

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angular - Set default option in mat-select

I have a simple select option form field in my Angular material project: component.html <mat-form-field> <mat- ... selected did not work for me See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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angular - Best way to "flatten" an array inside an RxJS Observable

My backend frequently returns data as an array inside an RxJS 5 Observable (I'm using Angular 2). I often ... of these items from the backend. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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angular - Property 'json' does not exist on type 'Object'

I'm trying fetch data via REST with angular 2 HttpClient. I'm following the angular tutorial here https://angular. ... .message || error); } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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angular - Error: Unexpected value 'undefined' imported by the module

I'm getting this error after migrating to NgModule, the error doesn't help too much, any advice please? Error: ... }) export class AppModule { } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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angular - Angular2: Insert a dynamic component as child of a container in the DOM

Is there a way to insert dynamically a component as a child (not a sibling) of a DOM tag in Angular ... like a very surprising limitation. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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angular - How to call component method from service? (angular2)

I want to create service, which can interact with one component. All another components in my app, should be able to ... /From this place?; } } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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angular - Angular2 router keep query string

I wrote an Angular2 (v2.0.1) application that makes use of the router. The website is loaded with several ... when navigating? Thank you Lukas See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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angular - How to inject service into class (not component)

I want to inject a service into a class that is not a component. For example: Myservice import {Injectable} from ... a component)? Thank you. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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angular - Angular2 routing / deep linking not working with Apache 404

I am following the Angular 2 routing examples. Using the "lite" webserver I am able to navigate from ... (AppComponent, [ROUTER_PROVIDERS]); See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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angular - Is it possible to inject interface with angular2?

i wonder if there is a proper way to inject interfaces in Angular2? (cf. below) I think this is related with the ... }> { return null; }; } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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angular - Handling refresh tokens using rxjs

Since i've started with angular2 i have setup my services to return Observable of T. In the service i would ... , so some help is appreciated. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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492 views

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angular - Is there a type for "Class" in Typescript? And does "any" include it?

In Java, you can give a class to a method as a parameter using the type "Class". I didn't find anything ... if any includes Classes or not. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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angular - Is it possible to use a pipe in the code?

When I use my custom pipe in a template, it is like this: {{user|userName}} And it works well. Is it ... code. But is there any smart way? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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688 views

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angular - Angular2 get clicked element id

I have such click event <button (click)="toggle($event)" class="someclass" id="btn1"></button> <button (click) ... thing? because I am using it. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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angular - Uncaught Error: Unexpected directive 'MyComboBox' imported by the module 'AppModule'. Please add a @NgModule annotation

I've a custom component (MyComboBox) which has kendo-combobox inside. When I use my core module, webpack ... bootstrap: [AppComponent] }) See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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641 views

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angular - Tracking scroll position and notifying other components about it

Is there an easy way to track the browser scroll position and notify more than a single component about it? Use ... "col-md-12" track-scroll> See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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angular - ExpressionChangedAfterItHasBeenCheckedError: Expression has changed after it was checked. Previous value: 'undefined'

I know there are a lot of same questions already posted in stack-overflow and tried different solutions to ... events in child component See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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768 views

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angular - What is the read parameter in @ViewChild for

Need help to understand meaning of {read: ViewContainerRef} in following statement. @ViewChild('myname', {read: ViewContainerRef}) target; See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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angular keyvalue pipe sort properties / iterate in order

When using the Angular keyvalue pipe to iterate over an object's properties as follows: <div *ngFor="let ... the properties were added. Thanks See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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951 views

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angular - Router Navigate does not call ngOnInit when same page

I am calling router.navigate on same page with some query string parameters. In this case, ngOnInit() does not ... need to add anything else ? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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768 views

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angular 2 ngIf and CSS transition/animation

I want a div to slide in from the right in angular 2 using css. <div class="note" [ngClass]="{'transition': ... opacity: 100; margin-left: 0; } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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803 views

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angular - RouterModule.forRoot(ROUTES) vs RouterModule.forChild(ROUTES)

What is the differences between these two and what are the use cases for each? The docs aren't exactly helpful: ... really think of a use case. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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548 views

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angular - Connect method DataSource is not emitting all paginated rows for MatTable

I am trying to use the DataSource interface to update MatTableData, using server-side pagination. <div> <mat-table ... to figure this one out. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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angular - Page is part of the declarations of 2 modules: Error in ionic build prod

When I run npm run ionic:build I am able to build successfully. But When I run npm run ionic: ... ) export class PatientDetailPageModule { } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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angular - How to make directives and components available globally

I wrote a custom directive that I use in my Angular 2 application to close content panels (some content ... this behaviour simply not possible? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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456 views

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angular - Ionic2/Angular2 - Read a custom config file

I'm working on an ionic2 project and I need to create a new custom JSON config file. I found some ... some opinions and solutions :) Thanks See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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448 views

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angular - ctorParameters.map is not a function in angular2-mdl

I'm trying to use angular2-mdl with angular-cli. I imported MdlModule in app.module.ts. When I try to use <mdl- ... "typescript": "2.0.2" } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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564 views

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angular - Angular2 - Interaction between components using a service

I have two component A and B, where component A contains a button. I wish when user click on this button, fire ... the right way to achieve it ? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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