After upgrading from angular 4.4 to 5.0 and after updating all HttpModule and Http to HttpClientModule I started to get this error. I also added HttpModule again to be sure it’s not due to some dependency but it doesn’t resolve the issue In app.module, I have all correctly set import { HttpModule } from ‘@angular/http’; … Read more
I wanted to start a simple hello world app for Angular. When I followed the instructions in the official quickstart the installation created 32,000 files in my project. I figured this is some mistake or I missed something, so I decided to use angular-cli, but after setting up the project I counted 41,000 files. Where … Read more
The current docs only talk about getting route params, not the actual route segments. For example, if i want to find the parent of current route, how is that possible? 38 s 38
Does anybody know how to get hold of an element defined in a component template? Polymer makes it really easy with the $ and $$. I was just wondering how to go about it in Angular. Take the example from the tutorial: import {Component} from ‘@angular/core’; @Component({ selector:’display’, template:` <input #myname (input)=”updateName(myname.value)”/> <p>My name : … Read more
I have a number of elements that I want to be visible under certain conditions. In AngularJS I would write <div ng-show=”myVar”>stuff</div> How can I do this in Angular 2+? 2Best Answer 21 The hidden property can be used for that [hidden]=”!myVar” See also https://developer.mozilla.org/en-US/docs/Web/HTML/Global_attributes/hidden issues hidden has some issues though because it can conflict … Read more
I have a parent component (CategoryComponent), a child component (videoListComponent) and an ApiService. I have most of this working fine i.e. each component can access the json api and get its relevant data via observables. Currently video list component just gets all videos, I would like to filter this to just videos in a particular … Read more
I have a simple ngFor loop which also keeps track of the current index. I want to store that index value in an attribute so I can print it. But I can’t figure out how this works. I basically have this: <ul *ngFor=”#item of items; #i = index” data-index=”#i”> <li>{{item}}</li> </ul> I want to store … Read more
After updating to Angular 6.0.1, I get the following error on ng serve: Could not find module “@angular-devkit/build-angular” from “/home/Projects/myProjectName”. Error: Could not find module “@angular-devkit/build-angular” from “/home/Projects/myProjectName”. at Object.resolve (/home/Projects/myProjectName/node_modules/@angular-devkit/core/node/resolve.js:141:11) at Observable.rxjs_1.Observable [as _subscribe] (/home/Projects/myProjectName/node_modules/@angular-devkit/architect/src/architect.js:132:40) ng update says everything is in order. Deleting node_modules folder and a fresh npm install install did not help … Read more
I’m using Angular and I want to use *ngIf else (available since version 4) in this example: <div *ngIf=”isValid”> content here … </div> <div *ngIf=”!isValid”> other content here… </div> How can I achieve the same behavior with ngIf else? 19 s 19 Angular 4 and 5: Using else: <div *ngIf=”isValid;else other_content”> content here … </div> … Read more
When should I store the Subscription instances and invoke unsubscribe() during the ngOnDestroy life cycle and when can I simply ignore them? Saving all subscriptions introduces a lot of mess into component code. HTTP Client Guide ignore subscriptions like this: getHeroes() { this.heroService.getHeroes() .subscribe( heroes => this.heroes = heroes, error => this.errorMessage = <any>error); } … Read more
