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ANGULAR QUESTIONS

Test observable 'next' callback in RxJs and Angular
Test observable 'next' callback in RxJs and Angular
wish help you to fix your issue I put together a simple Stackblitz to show you how I would approach testing that simple component method you describe.Here is the spec from that Stackblitz:
TAG : angular
Date : November 29 2020, 04:01 AM , By : user2188229
How to pass Form Control value to custom Validator Function's Parameter in Angular 5 Reactive Forms
How to pass Form Control value to custom Validator Function's Parameter in Angular 5 Reactive Forms
Does that help You have to wrap it in a private form field which contains an arrow function, otherwise it's executed at component creation, instead of validation:
TAG : angular
Date : November 28 2020, 04:01 AM , By : user2187899
Angular 6 - NullInjectorError: No provider for HttpClient in unit tests
Angular 6 - NullInjectorError: No provider for HttpClient in unit tests
This might help you I am importing and using HttpClient in a service as follows:
TAG : angular
Date : November 28 2020, 04:01 AM , By : Luis Vázquez
How to get the text from a parent element only and not from its children - Protractor
How to get the text from a parent element only and not from its children - Protractor
hop of those help? In selenium if you perform get text on parent element by default it will take all the child element text too, So when you perform by.cssContainingText it fails if you have child elements. To avoid this
TAG : angular
Date : November 28 2020, 04:01 AM , By : user2187672
Getter Methods on Deserialized Objects in Typescript
Getter Methods on Deserialized Objects in Typescript
I hope this helps you . What you had worked by coincidence because the property names you were accessing were also provided by the response from the .post. In reality, TypeScript is no longer used after the tsc command which transpiles it to JavaScri
TAG : angular
Date : November 27 2020, 04:01 AM , By : Detlef Hüttemann
Child routes inside lazy loaded module not activated
Child routes inside lazy loaded module not activated
I hope this helps you . The tabs are children of the edit page:
TAG : angular
Date : November 27 2020, 04:01 AM , By : Bigad Aboubakr
Get "Day" of Selected Date in ngb-datepicker (ng Bootstrap) in Angular Application
Get "Day" of Selected Date in ngb-datepicker (ng Bootstrap) in Angular Application
Any of those help You can use the calendar to get the day of the week and have a Dictionary which stores the Day names.
TAG : angular
Date : November 27 2020, 04:01 AM , By : RobH3
Make nested HTTP calls from a Service Class and return Observable
Make nested HTTP calls from a Service Class and return Observable
I wish this helpful for you I need to make two dependent HTTP calls from my Service Class in Angular 5 and return an Observable so that my component can subscribe to it. So inside the Service Class function: , Try switchMap, something like this (NOT
TAG : angular
Date : November 27 2020, 04:01 AM , By : Ricki Dholi Patel
Angular 6 reuse onclick event
Angular 6 reuse onclick event
this one helps. I have a onclick event that will redirect to a new page carrying the correct query params. I am going to use this same function in about 5 other places, I am trying to put it in a common place to be reused instead of writing the same
TAG : angular
Date : November 27 2020, 04:01 AM , By : nihilsinecaos
Show loading indicator in Angular while waiting for a RxJS observable
Show loading indicator in Angular while waiting for a RxJS observable
it should still fix some issue If you just want the content to disappear you can emit for example null when you start fetching a different user:
TAG : angular
Date : November 27 2020, 04:01 AM , By : Michael Kuehne
ERROR TypeError: (intermediate value).share is not a function
ERROR TypeError: (intermediate value).share is not a function
around this issue RxJS v6 has new import statements (see section 2 in the link).
TAG : angular
Date : November 26 2020, 04:01 AM , By : Madooooo
angular 4 typescript validation error Object literal may only specify known properties
angular 4 typescript validation error Object literal may only specify known properties
help you fix your problem Problem 1 - You didn't have imported Account interface in your AccountingComponent.Add import { Account } from '../../models/Account'; in your AccountingComponent
TAG : angular
Date : November 26 2020, 04:01 AM , By : AUF
Angular, using one component in other two components
Angular, using one component in other two components
To fix the issue you can do I add some imports to that shared module like CommonModule and it works now.
TAG : angular
Date : November 26 2020, 04:01 AM , By : Willenbrock
ngx-select-dropdown -- how to set default value for the dropdown? (angular 6.x)
ngx-select-dropdown -- how to set default value for the dropdown? (angular 6.x)
it helps some times Instead of using an async pipe, you could subscribe to the dynamically loaded data from within the component and in the subscription block you can set the first element of the received array to selectedDataSource object like shown
TAG : angular
Date : November 25 2020, 04:01 AM , By : user2186808
Angular - reference child component dynamically
Angular - reference child component dynamically
wish helps you Apparently, you have to use ng-template and then show the template in the view.Change child.html to have a template:
TAG : angular
Date : November 25 2020, 04:01 AM , By : user2186763
RXJS - Filter appears to filter, but results still show unfiltered
RXJS - Filter appears to filter, but results still show unfiltered
hope this fix your issue tap does not modify the stream. It is often used for debugging and for side effects (operations that don't affect the stream).Use map instead.
TAG : angular
Date : November 25 2020, 04:01 AM , By : S. Ghufran
How to make changes on value which came with @Input - Angular
How to make changes on value which came with @Input - Angular
Does that help im new at angular and typescript. I have a component and this component get some parameters. For example; , create a get and set method to listen to changes
TAG : angular
Date : November 25 2020, 04:01 AM , By : user2186556
QR Scan in Angular
QR Scan in Angular
fixed the issue. Will look into that further Finally found this, https://github.com/zxing-js/ngx-scanner. This one works with Angular very well. With this, you can scan QR codes in your web app. Cheers!
TAG : angular
Date : November 24 2020, 04:01 AM , By : mustafa
Angular / API consuming - request header - CORS proxy
Angular / API consuming - request header - CORS proxy
Does that help x-api-key is not a CORS safelisted request header. It will trigger an OPTIONS request which must have a successful response or the XHR will be blocked by browser.There's no way for chrome plugin to modify the response HTTP status code
TAG : angular
Date : November 24 2020, 04:01 AM , By : Luis Garcia
Ng If does not work in observable variable in Angular 6
Ng If does not work in observable variable in Angular 6
seems to work fine I have integrated the Angular6 material data grid with server side pagination as per this link https://blog.angular-university.io/angular-material-data-table/ , handle the condition with nested ngIf s
TAG : angular
Date : November 24 2020, 04:01 AM , By : Jakob Birk
Angular Material 7: Link for whole row
Angular Material 7: Link for whole row
I wish this helpful for you Well, you can do the classic trick of an empty a tag over the whole row. Simply put the tag into just ONE of ng-containers and give it a custom css rule:
TAG : angular
Date : November 24 2020, 04:01 AM , By : user2186354
How to customize PrimeNG TurboTable paginator?
How to customize PrimeNG TurboTable paginator?
this will help The PrimeNG has paginator component along with the list of structural style classes. You have to read the theme documentation for customization. Here is the list of selectors you can use to set your own styles using CSS:
TAG : angular
Date : November 23 2020, 04:01 AM , By : user2186068
ExpressionChangedAfterItHasBeenCheckedError when using ReactiveForms and NgbModal
ExpressionChangedAfterItHasBeenCheckedError when using ReactiveForms and NgbModal
With these it helps I finally found a way to overcome the issue but still having the dirty flag maintained.ng-untouched is maintained onBlur when FormControl is set to {updateOn:'change'} (the default). What you have to do is simply blur the input ma
TAG : angular
Date : November 23 2020, 04:01 AM , By : Haines Brown
Angular Material table with right-to-left direction
Angular Material table with right-to-left direction
I think the issue was by ths following , I am using angular material 7.1.1 version. I have a table with horizontal scrolling and sticky columns. , It happened to me, too, I've upgraded my chrome and it worked fine.
TAG : angular
Date : November 23 2020, 04:01 AM , By : user2186028
Angular 7 how to calculate the time a component take to completely load on the DOM
Angular 7 how to calculate the time a component take to completely load on the DOM
like below fixes the issue You can measure it with window.performance.now in milliseconds like this:
TAG : angular
Date : November 23 2020, 04:01 AM , By : user2186016
Observerable appending data over and over again on populate action
Observerable appending data over and over again on populate action
With these it helps If you want for every 5 records to return array of 10 records (and not the cumulative result) you should not always push in this.rows, or you can reset this.rows before populating it. Try something like this:
TAG : angular
Date : November 23 2020, 04:01 AM , By : Hrishi Jain
this is not a function - Angular 5
this is not a function - Angular 5
I wish this help you I have created a simple form and I am validating. The validation properly works but I m trying to call a method when the validation is done, but I get the following error: , Use the arrow functions instead of functions.
TAG : angular
Date : November 23 2020, 04:01 AM , By : user2185819
angular app runs in local tomcat but gives error in dev environment
angular app runs in local tomcat but gives error in dev environment
wish help you to fix your issue Issue was although other were using IE11 there emulation was set to IE 8
TAG : angular
Date : November 22 2020, 04:01 AM , By : user2185698
Angular: Pass data from Material Dialog to component, which didn't open the dialog
Angular: Pass data from Material Dialog to component, which didn't open the dialog
hop of those help? I don't know this is the right way to solve problem but i try to help if it's work for younetwork.component.html
TAG : angular
Date : November 22 2020, 04:01 AM , By : user2185481
Keep the the alert box without dismiss if there is an error
Keep the the alert box without dismiss if there is an error
it helps some times return false is not the actual problem. You are calling alert.dismiss, that's the issue. If you don't want to hide alert, you should move dismiss code inside else block.Please change your code to following
TAG : angular
Date : November 21 2020, 04:01 AM , By : user2185462
Textarea typing issue in ngFor in Angular 6
Textarea typing issue in ngFor in Angular 6
hop of those help? You bind all data into: [(ngModel)]=postAnswer.Description so text appears in all textareas. You should add some kind of filter with ID of textarea, or use array to keep all textareas, like [(ngModel)]=postAnswer[id].Description;Th
TAG : angular
Date : November 21 2020, 04:01 AM , By : user2185452
fxFlex angular flex layout not working as expected version 7.0.0-beta.19
fxFlex angular flex layout not working as expected version 7.0.0-beta.19
This might help you Todo : , You forgot to import FlexLayoutModule in app.module.ts
TAG : angular
Date : November 21 2020, 04:01 AM , By : Bhavik Makvana
Combine requests in series - Angular 7
Combine requests in series - Angular 7
I wish this helpful for you I'm trying to chain a few requests in a series, something like forkJoin but the requests NOT being requested in parallel. Here's what I have so far: , Here's what ended up working:
TAG : angular
Date : November 21 2020, 04:01 AM , By : user2185424
Display table for dyanamically created row in angular 5
Display table for dyanamically created row in angular 5
Any of those help I want to display a table like this, but currently getting a wrong table like this. , Update your table body as follows -
TAG : angular
Date : November 21 2020, 04:01 AM , By : Anuj Kumar
ngFor does not render my obersavle response, but it does inset old values I add to the array?
ngFor does not render my obersavle response, but it does inset old values I add to the array?
it should still fix some issue Fixed it!!!I needed to assign my response to a variable and then push it into this.openedRecipe.Receptregels, if I do that it works, if not it does not work.
TAG : angular
Date : November 21 2020, 04:01 AM , By : user2185282
Concat variable name in angular cli using ngFor
Concat variable name in angular cli using ngFor
I wish did fix the issue. using ngFor and its index I need to call unique variables. How can I concat the variable name in the HTML using the value of the index? , You can manage it via creating a new property in project
TAG : angular
Date : November 21 2020, 04:01 AM , By : user2185260
Angular 5 'inputClick' is declared but its value is never read
Angular 5 'inputClick' is declared but its value is never read
wish of those help Data binding will not happen if you declare it as private. You need to declare it as public to make it available. Follow the code below:
TAG : angular
Date : November 21 2020, 04:01 AM , By : user2185176
Angular 7 - getting error as `Module parse failed: Unexpected character '@'` how to fix this?
Angular 7 - getting error as `Module parse failed: Unexpected character '@'` how to fix this?
wish help you to fix your issue I don't see anything wrong, this syntax seems valid to me in Typescript. But you seem to be using that as javascript: change your file extension from js to ts and the message should disappear.
TAG : angular
Date : November 21 2020, 04:01 AM , By : user2185165
RxJs subscribeTo.js observable check works in Chrome, but fails in Chrome Incognito, MS Edge, and Firefox
RxJs subscribeTo.js observable check works in Chrome, but fails in Chrome Incognito, MS Edge, and Firefox
fixed the issue. Will look into that further I had the same issue, with nearly the same config.After some research I checked all imports and changed all imports from (rxjs/internal/operators)
TAG : angular
Date : November 20 2020, 04:01 AM , By : nayak
Getting the error: Could not find column with id "id"
Getting the error: Could not find column with id "id"
this one helps. Your definition is wrong for "matColumnDef" property. See example below,
TAG : angular
Date : November 20 2020, 04:01 AM , By : user2184957
Angular 5 - Dynamic base reference is causing duplicate loading of bundles|chunks
Angular 5 - Dynamic base reference is causing duplicate loading of bundles|chunks
this one helps. I am using Angular 5.2 version in the project. I am setting the base reference dynamically in the index.html to satisfy the different URL for different clients. , The problem lies during the ng build arguments. Earlier it was
TAG : angular
Date : November 20 2020, 04:01 AM , By : Bang Jek
Angular - use a service in a function and this function in a pipe
Angular - use a service in a function and this function in a pipe
fixed the issue. Will look into that further Its a this context issue. Either you can use fat arrow function or bind handleError function with service context.
TAG : angular
Date : November 20 2020, 04:01 AM , By : Will Oliver
How to dynamically call the parent methods from child component?
How to dynamically call the parent methods from child component?
I wish this helpful for you As per @Eliseo comment, I got the answer for my questionparentcomponent.ts
TAG : angular
Date : November 19 2020, 04:01 AM , By : user2184694
Trigger same function in different component
Trigger same function in different component
this one helps. You can create one service and use DRY (Don't Repeat Yourself) principle to reduce your code logic as well as solve your issue.You probably have multiple places across the application that will need to access components suppose side-b
TAG : angular
Date : November 19 2020, 04:01 AM , By : user2184684
Angular 7 error RangeError: Maximum call stack size exceeded
Angular 7 error RangeError: Maximum call stack size exceeded
Does that help 1.This error occur when there is an infinite loop. As you have mentioned that the page loads when app-heroes is commented, this might be used as selector-name for more than one component which is not allowed. This can cause an infinite
TAG : angular
Date : November 19 2020, 04:01 AM , By : eddie
Maximum call stack size exceeded when adding PWA in Angular
Maximum call stack size exceeded when adding PWA in Angular
this one helps. Unless you are using Angular 7 or higher, you need to execute something like
TAG : angular
Date : November 19 2020, 04:01 AM , By : Bryan wendell Gabin
angular reactive forms remove formArray elements after save
angular reactive forms remove formArray elements after save
I hope this helps . In angular 5 I have a form with user can add multiple records of charges which can save at once. after save need to remove those records and go back to initial state with one row. I have tried as following code it goes to initial
TAG : angular
Date : November 19 2020, 04:01 AM , By : Kane Able
check whether angular array object has a specified value or not
check whether angular array object has a specified value or not
hope this fix your issue if students is your array:check if all array has a student with isAvailable true:
TAG : angular
Date : November 18 2020, 04:01 AM , By : viki piki
While using moment in Angular 7 getting Error:TypeError: moment is not a function
While using moment in Angular 7 getting Error:TypeError: moment is not a function
fixed the issue. Will look into that further followed below steps to install and use moment: , import is fine:
TAG : angular
Date : November 18 2020, 04:01 AM , By : user2184404
Cannot set property 'filterPredicate' of undefined error in Angular Material Table
Cannot set property 'filterPredicate' of undefined error in Angular Material Table
should help you out the call from your service hadn't returned when the this line " this.dataSource.filterPredicate = this.customFilterPredicate();" executed... we know that Async calls can take time (compared to fetching hard-coded data)...
TAG : angular
Date : November 18 2020, 04:01 AM , By : user2184256
Angular 2+ Animation: Adding checkbox check effect to individual checkboxes that are generated by a loop
Angular 2+ Animation: Adding checkbox check effect to individual checkboxes that are generated by a loop
it should still fix some issue Something like the following would allow you to accomplish this.Assign a TemplateRef checkBox to the input, then use that in an expression to set the color [style.background-color]="checkBox.checked ? 'red' : 'yellow'"
TAG : angular
Date : November 18 2020, 04:01 AM , By : user2184236
I am having issue in checking whether a username exists or not in my angular 6 application via api
I am having issue in checking whether a username exists or not in my angular 6 application via api
Does that help you need to create async validator to check and apply validation on FormControl field. below is dummy code which can help you to develop your owncreate another file user.validator.ts
TAG : angular
Date : November 18 2020, 04:01 AM , By : Arik
How can I convert an ionic http GET request from @angular\Http to @ion-native\Http?
How can I convert an ionic http GET request from @angular\Http to @ion-native\Http?
it should still fix some issue As per documentation, get returns a promise... but for "subscribe" (in order to use this.weatherProvider.getWeather(latitude, longitude).subscribe())... you need to return an observable from PromiseThis should be able t
TAG : angular
Date : November 18 2020, 04:01 AM , By : user2184175
fa-icon is not a known element in a Reusable Module
fa-icon is not a known element in a Reusable Module
fixed the issue. Will look into that further I think this is particular to FontAwesome because my original method works as a component(Why??).
TAG : angular
Date : November 17 2020, 04:01 AM , By : user2183887
Angular 6: Is it possible to pass a function as parameter?
Angular 6: Is it possible to pass a function as parameter?
Hope that helps It's possible ! you just need @Output click = new EventEmitter(); in your modal template, you can read about documentation here
TAG : angular
Date : November 17 2020, 04:01 AM , By : user2183884
Angular Reactive Forms with FormArray inside a nested FormGroup
Angular Reactive Forms with FormArray inside a nested FormGroup
hop of those help? So I ended up redoing it from scratch. Weird thing... it turns out that the 3rd thing I've tried eventually worked:
TAG : angular
Date : November 17 2020, 04:01 AM , By : Fayez Bayzid
Angular: Right way to wait for Async data to be loaded
Angular: Right way to wait for Async data to be loaded
it fixes the issue I have to make multiple API calls(http-requests) to get all the data I need. , You can use(I am using "rxjs": "^5.5.11").
TAG : angular
Date : November 17 2020, 04:01 AM , By : Dave Foster
NgRX effect called with empty state
NgRX effect called with empty state
I hope this helps . You reducer should always have a default case.Every action is passed through every reducer loaded in your application. This means if you don't handle the "other" actions inside your reducer the reducer returns undefined, hence the
TAG : angular
Date : November 16 2020, 04:01 AM , By : Ciprian Agapi
How do you create a union type for a component's services?
How do you create a union type for a component's services?
I hope this helps . So as @DeborahK suggested, an interface was the way to go.Here's the interface and updated constructor. (Update Promise wrapper as needed).
TAG : angular
Date : November 16 2020, 04:01 AM , By : Nicolas Percy
Angular6 - Using service outside of constructor - error as undefined
Angular6 - Using service outside of constructor - error as undefined
Any of those help It has to do that this is being (re)assigned to the window instead of the component instance. Use arrow functions to capture this when passing methods.
TAG : angular
Date : November 16 2020, 04:01 AM , By : azun

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