Recent questions tagged angular2

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angular2 services - Angular 2/4 can't read object in initForm()

I'm creating an edit form in angular and I'm confused about the lifecycle of the object that is returned from ... help with my specific use case See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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517 views

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angular2 routing - Angular 2 async pipe not rendering/updating Observable data automatically

I am facing an issue with the Angular2 router and an async pipe. I am trying to render an RxJs Observable and ... do with two/one way binding? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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angular2 directives - Get the width, height and offset of clicked div - Angular 2

I have a template that creates a list of links using *ngFor and a separate div element that I want to ... and always my QueryList is empty. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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angular2 routing - how to apply different animation between different route in angular 2

I have a test app build with angular 2, I have successfully applied one animation between route change ... multiple animations between route? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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angular2 routing - No provider for ActivatedRoute - Angular 2 RC5

After upgrading to Angular 2 RC5 (from RC4) it seems I can no longer inject ActivatedRoute into my components. ... going on here I wonder? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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489 views

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angular2 routing - Angular 2 lazily loaded routes that contain aux router outlet

I'm having an issue with my routing that I'd need a little help with. Originally I had all my routing in a ... d appreciate if you'd post them. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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angular2 template - Angular 2 RC2 New Forms

As suggested in article: https://docs.google.com/document/u/1/d/1RIezQqE4aEhBRmArIAS1mRIZtWFf6JxN_7B4meyWK0Y/pub that ... anyone please guide? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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angular2 routing - Angular 2 route change to same component causing reload

Looking for some advice on why a route change to the same component in my Angular 2 application is reloading the ... Plunker to see what I mean See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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516 views

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angular2 template - *ngFor is not working in angular 2

app.module.ts import { NgModule } from '@angular/core'; import { BrowserModule } from '@angular/platform-browser'; ... 'div' Any help, please? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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angular2 routing - Microsoft Edge adds parameters after navigating to a route on angular 2

I have a form being filled in two steps, the first form fills in the main part of an object and the second, the ... this or how can I fix it? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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638 views

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angular2 forms - Getting object properties via ngModel select list in Angular 2?

I'm have a problem fetching the properties of an object which has been selected from a select list in Angular 2 ( ... . What's going on here? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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700 views

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angular2 forms - Angular 2+ material mat-chip-list formArray validation

How do I validate that a mat-chip has been added to the mat-chip-list. I am using ReactiveForms. I have tried ... 'names').removeAt(index); } } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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angular2 forms - Angular 2+ material mat-chip-list formArray validation

How do I validate that a mat-chip has been added to the mat-chip-list. I am using ReactiveForms. I have tried ... 'names').removeAt(index); } } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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646 views

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angular2 changedetection - How to re-trigger all pure pipes on all component tree in Angular 2

I have pure pipe TranslatePipe that translates phrases using LocaleService that has locale$: Observable<string> ... OnPush detection strategy? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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2.2k views

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angular2 routing - Angular 2: NavigationCancel - Navigation ID 2 is not equal to the current navigation id 3

I'm trying to redirect old URLs (links in email templates) from a previous site to another route like this: ... Help would be very appreciated. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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539 views

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angular2 forms - Angular 2: Apply Validator.required validation on some condition

I have a angular 2 form wherein I have to make a field required on some condition like: description: ['' ... please suggest. Thanks in advance! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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478 views

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angular2 template - Why does this method/gettor get called X times in an Angular 2 service

I am trying to bind a value in my HTML component to a property in a service. If the private variable is ... click method it only fires once. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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807 views

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angular2 template - String interpolation inside innerHTML in angular 2

How can I render an expression inside an [innerHTML] directive: public stringInterpolation: string = 'title'; public ... all data as text. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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486 views

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angular2 services - Persisting and accessing values globally in multiple components in Angular 2

I have a settings page where users can save some config variables, such as a Username. The user can also ... setting.ts - someOtherComponent.ts See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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714 views

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angular2 routing - Angular 2 RC1 Router doesn't work without any routerLInk

i have serious problem with angular 2 (RC1) router. This code works: <a [routerLink]="['/ ... .. thats pretty strange.. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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589 views

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angular2 routing - Conditionally Load Different Modules on the Same Path in Angular

I have a multiple user Angular app, with a module for each user (because they have totally different ... solution on solution branches. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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634 views

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angular2 template - Angular: How to determine active route with parameters?

I've read this question about how to determine the active route, but still it's not clear to me how to ... with passing the correct parameter?? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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459 views

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angular2 directives - Accessing `selector` from within an Angular 2 component

I'm trying to figure out how I can access the selector that we pass into the @Component decorator. For example ... . I am not using protractor See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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737 views

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angular2 directives - Angular 2 Best approach to use FileSaver.js

I need to use the FileSaver.js (https://github.com/eligrey/FileSaver.js/) in my Angular2 application. I know ... window.saveAs to save file. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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549 views

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angular2 routing - Angular 2 Authentication with child routes

I have an angular 2 application in which I need to be authenticated on every page. So I have implemented a ... the user is not authenticated? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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588 views

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angular2 changedetection - Angular change detection process repainting the dom

I'm learning about Angular change detection process and I'm checking the Chrome dev tools, I see strange behavior ... with the plnkr link above. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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486 views

1 answer

angular2 forms - “Expression has changed after it was checked” Angular popup error

I have seen couple of articles about this error, I have went through some but couldn't find the solution. Here i am ... </div> </div> </div> See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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729 views

1 answer

angular2 services - How to fix Angular 2 `Uncaught (in promise): TypeError: Cannot read property 'query' of null`?

I've been using the Heroes tutorial in the Angular 2 docs to experiment. However, I've come to a point ... problem by looking into the code. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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