Recent questions tagged Angular

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angular - in Angular2 how to know when ANY form input field lost focus

In Angular2 how to know when ANY input field has lost focus..! If I use observables on the form: form. ... of change detections... tx Sean 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 - Application becomes unresponsive after encountering an exception

How to tell Angular 2 to not block the whole application when it encounters an exception? I'm not ... Angular specific solution or workaround? 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 - What is the difference between *ngIf and [hidden]?

Say I check it against and expression, then aren't these two same ? <div *ngIf="expression">{{val}}</div> <div ... ]="!expression">{{val}}</div> 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 - Emit event from parent to child

I have a Submitbutton in the parent component namelypersonDetails.personDetailshas manyperson` components. Whenever I click ... parent to child. 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 create an RXjs RetryWhen with delay and limit on tries

I am trying to make an API call (using angular4), which retries when it fails, using retryWhen. I want it to ... 's say 10 times? 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 - How do I inject a parent component into a child component?

I'm trying to inject a parent component into a child component. I thought this would be straightforward – simply ... .clear(); } } Plunker 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 - Can lazy-loaded modules share the same instance of a service provided by their parent?

I've just run into a problem with a lazy-loaded module where parent and child module both require the same ... share the same service instance? 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 use angular2 http API for tracking upload/download progress

Tho there are many adhoc libraries supporting upload/download progress in angular2, I do not know how to do use ... the angular repo for this? 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 - Dynamically load HTML template in angular2

I have created a project using angular-cli which contains AppComponent as follows: import { Component } from '@angular ... here if it helps. 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 ui - Scope issue in AngularJS using AngularUI Bootstrap Modal

plunker: http://plnkr.co/edit/wURNg8ByPYbEuQSL4xwg example.js: angular.module('plunker', ['ui.bootstrap']); var ... $scope.ok and $scope.cancel? See Question&Answers more detail:os...

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

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958 views

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angular - Reactive forms - disabled attribute

I am trying to use the disabled attribute from a formControl. When I put it in the template, it works: <md- ... input). What is the problem? 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 - Getting instance of service without constructor injection

I have a @Injectable service defined in bootstrap. I want to get the instance of the service without using ... instance for use in components See Question&Answers more detail:os...

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

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635 views

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angular - document.getElementById replacement in angular4 / typescript?

I'm working with angular4 in my practice work, and this is new for me. In order to get HTML elements ... any replacement for this in angular. See Question&Answers more detail:os...

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

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529 views

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angular - Inheritance and dependency injection

I have a set of angular2 components that should all get some service injected. My first thought was that it ... service from the super class? See Question&Answers more detail:os...

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

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573 views

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angular ui - Dynamically set the value of ui-sref Angularjs

I have searched for a similar question but the ones that came up seem slightly different. I am trying to change ... Section</button> </div> See Question&Answers more detail:os...

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

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418 views

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angular - Difference between interfaces and classes in Typescript

What is the different between Typescript Interfaces and Classes? When do I use a Class? When do I use Interfaces ... these models? 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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610 views

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angular - How to pass query parameters with a routerLink

I want to pass a query parameter prop=xxx. This didn't work <a [routerLink]="['/somepath', {queryParams: {prop: 'xxx'}}]"> Somewhere </a> 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 - Argument of type 'string | null' is not assignable to parameter of type 'string'. Type 'null' is not assignable to type 'string'

I have a dotnetcore 20 and angular4 project that I am trying to create a userService and get the user ... localStorage.getItem('currentUser')); See Question&Answers more detail:os...

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

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963 views

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angular - Angular2 add class to body tag

How can I add a class to the body tag without making the body as the app selector and using host binding ... want the document scrollbar to hide See Question&Answers more detail:os...

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

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497 views

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angular - What are the practical differences between template-driven and reactive forms?

I have been reading about Angular2 new Forms API and it seems that there are two approaches on forms, one is ... other? And if yes, why? See Question&Answers more detail:os...

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

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543 views

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angular - How to watch and reload ts-node when TypeScript files change

I'm trying to run a dev server with TypeScript and an Angular application without transpiling ts files every ... something like gulp watch. See Question&Answers more detail:os...

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

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680 views

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angular - Making sure observables in for loop are all finished before executing other code

I have a piece of code that looks like this: getPersons().subscribe( persons => { for (const ... finished before executing subsequent code? 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 - Hide/show individual items inside ngFor

I need to show / hide part of component. Here is Angular2 example. <li *ngFor=" #item of items " > <a ... simple way to solve this problem ? See Question&Answers more detail:os...

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

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408 views

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angular - Custom ExceptionHandler change detection lag

I'm trying to implement a custom ExceptionHandler in an Angular 2 app which submits uncaught errors to a custom ... > console.error(err)); See Question&Answers more detail:os...

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

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576 views

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angular - CORS issue with Google Oauth2 for server side webapps

I referred this question on SO: Google oauth 400 response: No 'Access-Control-Allow-Origin' header is ... accessed directly fron browser. See Question&Answers more detail:os...

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

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524 views

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angular - Does fakeAsync guarantee promise completion after tick/flushMicroservice

Main issue is how to test that expected actions were performed once a Promise was completed, for example ... calling tick or flushMicrotasks. See Question&Answers more detail:os...

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

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843 views

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angular - Testing - Can't resolve all parameters for (ClassName)

Context I created an ApiService class to be able to handle our custom API queries, while using our own serializer + ... and how to fix this. See Question&Answers more detail:os...

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

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444 views

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angular - Create new instance of class that has dependencies, not understanding factory provider

I've been working on this for a while now and can't seem to find an answer clear enough to understand. ... post, any help would be 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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