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Recent questions tagged angular

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angular - How to get height and width of device display in angular2 using typescript?

I found this solution. Is it valid? import {Component} from '@angular/core'; import {Platform} from 'ionic-angular'; ... the right way to do 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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611 views

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angular - Angular2: Loading modules dynamically from a given folder

app |-plugins |-plugin1 |-config.json |-plugin1.module.ts |-plugin1.component.ts |-plugin2 |-config.json |-plugin2 ... on angular2 latest(2.1.0) See Question&Answers more detail:os...

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

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793 views

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angular - How to apply canActivate guard on all the routes?

I have a angular2 active guard which handle if the user is not logged in, redirect it to login page: ... not find any useful solution Thanks See Question&Answers more detail:os...

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

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926 views

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angular - CanActivate vs. CanActivateChild with component-less routes

The angular2 documentation about Route Guards left me unclear about when it is appropriate to use a CanActivate ... routes with canActivate? See Question&Answers more detail:os...

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

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834 views

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angular - Angular2/4 : Refresh Data Realtime

I need to refresh the data in a component page in an interval. Also I need to refresh the data after doing ... if there exists any other way? See Question&Answers more detail:os...

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

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727 views

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angular - Angular2 set value for formGroup

So I have a complex form for creating an entity and I want to use it for editing as well I am using new ... a pain in case of the arrays See Question&Answers more detail:os...

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

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753 views

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angular - Multiple ng-content

I am trying to build a custom component using multiple ng-content in Angular 6, but this is not working ... sections in same component? Thanks! See Question&Answers more detail:os...

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

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779 views

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angular - Difference between [(ngModel)] and [ngModel] for binding state to property?

Here is a template example: <input type="number" class="form-control" [(ngModel)]="overRideRate" formControlName=" ... one is preferred and why? See Question&Answers more detail:os...

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

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652 views

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angular - How to Using a FormArray in a FormGroup

html file <form #form="ngForm" [formGroup]="sectionForm" #formDirective="ngForm" (ngSubmit)="setSections(sectionForm.value ... (forms.js:8070) See Question&Answers more detail:os...

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

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771 views

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angular - Ionic2 - Displaying project images on the UI

I have the following brand new project, created with: $ ionic start MyIonic2Project sidemenu --v2 My question is ... src/pages/home/home.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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852 views

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angular - Callback and Testing Highcharts

I am currently using angular 9 with Highcharts. Link to the code : https://stackblitz.com/edit/angular-ivy- ... .ts to hello.component.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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715 views

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angular - Angular2 router in one component

I write Angular2 app with router like /main /item . App have a lot of filter tables/trees/combobox. I want ... and component. is it possible? See Question&Answers more detail:os...

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

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520 views

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angular - Class Interface function definition - TypeError: Object doesn't support property or method

I've written a construct similar to the following in an Angular app (this has been greatly simplified to ... App: typescript-interface-issues See Question&Answers more detail:os...

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

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562 views

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angular - How can I change styles of component in different places?

I have component, that is only used in app.component.html. This footer exists on all pages. I want to change background ... So how can I do 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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843 views

1 answer

angular - Custom Controls with Reactive Forms

I am using Angular 7, Angular Material controls with Reactive Forms. I created custom text (matInput type=" ... regard is highly 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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633 views

1 answer

angular - Is it possible to require only some specified key in an object using type mapping and conditional type?

There is a type from a 3rd party: interface UpdateRequest { data?: ValueRange[]; options?: Options } I want to create a ... : never ]-?: T[K] } See Question&Answers more detail:os...

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

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669 views

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angular - Angular4 What definition of Iterable should I use

I have upgraded my app to the latest Angular 4 (beta-8) version. However I keep having the following error : ... outDir": "./target/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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578 views

1 answer

angular - Filter in dropdown (MatSelect) not working with data from Http get request

I have created a simple Angular app using Angular Material with an input field and a select. In my select I ... select field doesn't reset. See Question&Answers more detail:os...

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

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1.6k views

1 answer

angular - karma TypeError "Cannot read property 'subscribe' of undefined"

While testing a simple component that has a shared service, the following error message appears, and I cannot manage ... and none worked... See Question&Answers more detail:os...

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

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755 views

1 answer

angular - typescript function returning undefined

Hello I have a method in a the class below: export class SearchService { userUID: string; searchItems: any ... . Any suggestions? Thanks! See Question&Answers more detail:os...

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

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795 views

1 answer

angular - Angular2,Typescript: How to put the radio button checked when in an array which displays one element per page?

Let me explain it in detail.Sorry for the question framing. I've an array of Objects which is stored in ... questions[indexVal].answers[0]; } 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

1 answer

angular - Service instance is not available for child component in angular2

I have created some services which should be shared within whole application but for some reason child components are throwing ... zone.js/dist/zone.js:356:38) at Object.NgZoneImp...

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

0 votes

744 views

1 answer

angular - Cannot read property 'navCtrl' of undefined

For hours I've been searching for a solution to this problem in my project to no avail. I've read many of the ... log(error.message); }); } } See Question&Answers more detail:os...

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

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608 views

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angular - {{myArray}} now updates in the view as of beta.16

Change detection has changed. Before beta.16, if your view contains {{myArray}}, that binding won't update if you ... .log(this.arr); } } See Question&Answers more detail:os...

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

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826 views

1 answer

angular - call a function in a component from another component

In Angular2 , assume I have component1(use it as left panel navigator) and component2 .these two components are ... cant use event binding 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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755 views

1 answer

angular - Mixing Reactive Form with Template Form

I have built a big form with lots of input using Template Form. Now I have got a requirement to add a part ... forms in a same form tag? See Question&Answers more detail:os...

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

0 votes

1.2k views

1 answer

angular - Cannot combine @Input decorators with query decorators using Ivy

I have migrated my angular 7 app to 8.0.0 and i'am now trying the new compiler ivy. The app works perfectly ... be out of order. Any ideas ? See Question&Answers more detail:os...

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

0 votes

872 views

1 answer

angular ui router - AngularJS, $digest error trying to redirect application on pages requiring login

I'm trying to redirect an AngularJS app in the case that the requested state requires login. This is the method ... what the error even means? See Question&Answers more detail:os...

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

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