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ANGULAR QUESTIONS

Is it possible to extend DefaultValueAccessor?
Is it possible to extend DefaultValueAccessor?
it fixes the issue With some newer angular version it is possible to extend the DefaultValueAccessor and register the value accessor without any problems.
TAG : angular
Date : November 28 2020, 11:01 PM , By : abdurrm
How do I remove asterisk from required field in Angular Material and add (optional) beside label for optional labels
How do I remove asterisk from required field in Angular Material and add (optional) beside label for optional labels
help you fix your problem So, following my comment, I looked on Angular Material's website. Look :
TAG : angular
Date : November 28 2020, 11:01 PM , By : Eugen
Angular2 Wrap components with login checks
Angular2 Wrap components with login checks
wish of those help I have wrapped several components' ngInit with check to see if the users are logged in or not: , As Günter did suggest
TAG : angular
Date : November 27 2020, 11:01 PM , By : Dadoo
Angular2 : Uncaught ReferenceError
Angular2 : Uncaught ReferenceError
With these it helps Move the class TableSorting to the top of the file. It is being used before it is created.
TAG : angular
Date : November 27 2020, 11:01 PM , By : Mahadi Hasan
Singleton service in Angular 2
Singleton service in Angular 2
To fix the issue you can do In Angular2 services are singletons per provider. If you provide a service multiple times, you'll get multiple instances.If you provide it in
TAG : angular
Date : November 27 2020, 11:01 PM , By : Chandra
How do I register for keyup event using NG2 reactive forms
How do I register for keyup event using NG2 reactive forms
hop of those help? In NG2, declaratively: , Found a solution that uses Subject:
TAG : angular
Date : November 26 2020, 11:01 PM , By : Alexandre Van den St
Angular 2 typescript compilation error :A class declaration without the 'default' modifier must have a name
Angular 2 typescript compilation error :A class declaration without the 'default' modifier must have a name
wish help you to fix your issue I am new to Angular2. My task is to update our project from angular2 RC1 to angular 2.1. I updated my Type script version from 5 to 6 and i am seeing compilation problems like : , You must name your class...replace :
TAG : angular
Date : November 25 2020, 11:01 PM , By : Vinay Joseph
File Upload In Angular?
File Upload In Angular?
I wish this helpful for you Angular 2 provides good support for uploading files. No third party library is required.
TAG : angular
Date : November 25 2020, 11:01 PM , By : user164665
Data not accessible outside the subscribe method in hello data log
Data not accessible outside the subscribe method in hello data log
I hope this helps you . That's by design. The data is only available when the function passed to subscribe(...)
TAG : angular
Date : November 25 2020, 11:01 PM , By : Vikram Krish
disable angular2 in-memory-web-api for production
disable angular2 in-memory-web-api for production
fixed the issue. Will look into that further Assuming you have some kind of "switch", whether it be the Angular CLI environment to the the node ENV, you can just switch which XHRBackend should be used. The in-memory-web-api uses its own backend InMem
TAG : angular
Date : November 25 2020, 11:01 PM , By : arsenalpw
IONIC 2 Build error: "ngc: Error: Error Cannot write file ...[myProject]/.tmp/[some folder]/*.d.ts"
IONIC 2 Build error: "ngc: Error: Error Cannot write file ...[myProject]/.tmp/[some folder]/*.d.ts"
I wish this helpful for you I get build error when I launch a CLI: "ionic build android" , I was having the same issue.Change your tsconfig.json to have
TAG : angular
Date : November 25 2020, 11:01 PM , By : Shubham
Invoke component refresh in Angular 2
Invoke component refresh in Angular 2
will be helpful for those in need I am trying to implement a navbar that shows different links based on whether or not a user is logged-in. , Expose login status via service
TAG : angular
Date : November 25 2020, 11:01 PM , By : Boby B Jacob
How to explain RxJS Subject to someone with Angular 1.X background
How to explain RxJS Subject to someone with Angular 1.X background
this will help according to the official docs, I can use a Subject like this: docs , $q.defer() comes very close.To clarify, 2 equal pieces of code.
TAG : angular
Date : November 24 2020, 11:01 PM , By : Ram Potharaju
Separate numeric and decimal in Angularjs2
Separate numeric and decimal in Angularjs2
wish of those help Using number pipe twice won't work because you cannot set something like set maximum integer digits before seperator.parameters for number pipe is as: {minIntegerDigits}.{minFractionDigits}-{maxFractionDigits} see: What are the par
TAG : angular
Date : November 24 2020, 11:01 PM , By : Tan Le
Angular2 @angular/material unmet dependency
Angular2 @angular/material unmet dependency
With these it helps Sounds like a dependency resolution issue; I had a similar problem that was fixed with these steps: Upgrade to the latest NodeJS version npm --version and make sure it's 3.10.x npm install npm rebuild
TAG : angular
Date : November 24 2020, 11:01 PM , By : Y.Meng
How to register a dynamically added custom component as a form control within a formgroup
How to register a dynamically added custom component as a form control within a formgroup
may help you . If I do not misunderstand your needs...Weird thing is that you attach your form group inside of the AppComponent. Instead you could create the full form dynamically. In order to do that you need to implement two functions:
TAG : angular
Date : November 23 2020, 11:01 PM , By : Pratik Prajapati
Angular 2 execute function in subscribe
Angular 2 execute function in subscribe
Does that help I have after ngOnInit 2 vars available items and title, items is for the view, i want to "execute" the setSeoTitle() function for the in the index.html, how can i achieve this?
TAG : angular
Date : November 23 2020, 11:01 PM , By : Ondřej Bárta
Angular 2 subscribe share items to multiple vars
Angular 2 subscribe share items to multiple vars
hop of those help? I want to share the data to two vars, items and title, how can i achieve that?
TAG : angular
Date : November 23 2020, 11:01 PM , By : Rakesh BN
Typescript compiler error property does not exist on object
Typescript compiler error property does not exist on object
wish of those help Your issue appears to be with the type argument. Don't type that as Object. Though I'm not sure what the issue is with your interface (it might be that you are missing semicolons?)This works for me:
TAG : angular
Date : November 22 2020, 11:00 PM , By : Code learner
Angular 2 error using model in component
Angular 2 error using model in component
I think the issue was by ths following , Your model isn't the problem here, you are missing () on @Input decorator:
TAG : angular
Date : November 21 2020, 11:01 PM , By : Tai Phung
NativeScript & Angular2 - How to bind an object?
NativeScript & Angular2 - How to bind an object?
I hope this helps . You can use ngIf directive or safe navigation operator (?) (known also as Elvis operator) to "protect" your template:ngIf directive
TAG : angular
Date : November 20 2020, 11:01 PM , By : jarze
Angular 2 - apply ngIf on host element using @HostBinding
Angular 2 - apply ngIf on host element using @HostBinding
should help you out ngIf is a directive and directives can't be added dynamically. They are only applied if markup added statically to a components template matches the selector.@HostBinding() only supports class., attr., and style. bindings.
TAG : angular
Date : November 20 2020, 11:01 PM , By : lei dong
Angular2 CLI: why bundle size of "--prod" smaller than "--prod --aot"?
Angular2 CLI: why bundle size of "--prod" smaller than "--prod --aot"?
This might help you I answered this on an issue on our GitHub, but here is my answer for reference:If you're using certain libraries that do not support AoT (and release UMD bundles) this might happen. The reason is that we cannot optimize components
TAG : angular
Date : November 19 2020, 11:01 PM , By : ELovesPuppy
Angular 2 Http Get Response Example
Angular 2 Http Get Response Example
I wish this help you That's not supposed to work this way. When the data arrives the callback passed to the observable is called. Code that needs to access this data has to be inside the callback.
TAG : angular
Date : November 19 2020, 11:01 PM , By : TheLastKhaos
EXCEPTION: Error in ./NgbTabset class NgbTabset - inline template:12:20 caused by: Cannot read property 'templateRef' of
EXCEPTION: Error in ./NgbTabset class NgbTabset - inline template:12:20 caused by: Cannot read property 'templateRef' of
around this issue As I observed:Both ngbTabTitle and ngbTabContent should be defined.
TAG : angular
Date : November 18 2020, 11:01 PM , By : MGlisci
ionViewDidLoad error: Cannot read property 'firstChild' of null
ionViewDidLoad error: Cannot read property 'firstChild' of null
around this issue In Ionic 2 App (Angular2 with Typescript), I am trying to pass a json to map for markers. , I wrapped code in setTimeOut then it works.
TAG : angular
Date : November 18 2020, 11:01 PM , By : john
NgModule installing its own routes
NgModule installing its own routes
will help you I am trying to figure out how to empoy @NgModule to better organize an Angular 2 modular app. In particular, I am interested in an NgModule installing its own routes into the app. Does anyone have a working example showing how to go abo
TAG : angular
Date : November 17 2020, 11:01 PM , By : Seth Turnlund
ng-bootstrap Datepicker current date like placeholder
ng-bootstrap Datepicker current date like placeholder
hop of those help? I use ng-bootstrap Datepicker something like here: plnkr example , You can do like this-In component, defined date like this-
TAG : angular
Date : November 17 2020, 11:01 PM , By : Alejandro Caballero
Parser Error: Got interpolation ({{}}) where expression was expected
Parser Error: Got interpolation ({{}}) where expression was expected
I hope this helps . You can't use interpolation inside standart property binding. There should be expression.Seems it should be:
TAG : angular
Date : November 17 2020, 11:01 PM , By : Sarah cook
angular 2 namespace model
angular 2 namespace model
wish help you to fix your issue You need to use keyword export if you want to expose namespaces. For example:
TAG : angular
Date : November 16 2020, 11:00 PM , By : C.Ryan
binding app component property from other child component
binding app component property from other child component
Does that help using providers meta property in component creates different instance of your service,so to make it work, you should put providers in your rootmodule as shown below,
TAG : angular
Date : November 16 2020, 11:00 PM , By : Alan Gabrieli Borges
Difference between 2 type of displaying data in Angular 2
Difference between 2 type of displaying data in Angular 2
may help you . 1) NOTE : don't use "" {{}} together else value will be stringified.
TAG : angular
Date : November 15 2020, 11:01 PM , By : Leisure Time Vaping
Angular 2 - Kendo UI grid. Issue with sort implementation
Angular 2 - Kendo UI grid. Issue with sort implementation
wish of those help The error means that you cannot have duplicate properties like you have in your loadRisks method. Look at the duplicate data property here in your object.
TAG : angular
Date : November 15 2020, 11:01 PM , By : B. Nguyen
Angular 2 not showing correctly values in input
Angular 2 not showing correctly values in input
To fix the issue you can do Each of the input elements has the same name attribute, which is supposed to be unique. To give each input element a unique name, you can use a {{ }} expression in its value with i as part of the expression. For example {{
TAG : angular
Date : November 14 2020, 11:01 PM , By : Fode A
Angular2 Routing : Loading twice
Angular2 Routing : Loading twice
should help you out The AppComponent shouldn't be part of the routing. It's what holds the root outlet.
TAG : angular
Date : November 14 2020, 11:01 PM , By : Hazarath Voleti
Is it possible to load the data after loading the template?
Is it possible to load the data after loading the template?
I wish this help you you can solve this with the interface Resolve of Angular 2. using the interface solves the method resolves will be called before the template.Follow...
TAG : angular
Date : November 13 2020, 11:01 PM , By : Kenyon
ngFor trackBy stil re-rendering DOM?
ngFor trackBy stil re-rendering DOM?
I wish this helpful for you I'm not sure how you implement the change function but I have implemented this code and it works fine:
TAG : angular
Date : November 12 2020, 11:01 PM , By : Sai Lava kumar Reddy
Ionic 2 : No provider for Loading
Ionic 2 : No provider for Loading
may help you . It should be LoadingController instead of Loading:
TAG : angular
Date : November 12 2020, 11:01 PM , By : Yash K
How can we load component dynamically in kendo-tabstrip-tab?
How can we load component dynamically in kendo-tabstrip-tab?
will be helpful for those in need In Angular2 you should create new components and reference them by adding their tag as tabstrip content.
TAG : angular
Date : November 12 2020, 11:01 PM , By : Jasper Carrot
Material design component "is not a known element" in Angular2
Material design component "is not a known element" in Angular2
With these it helps I have a hybrid Angular1 and Angular2 application. In one of the Angular2 components that I route to, I want to use a Material Design Button. , It should be
TAG : angular
Date : November 11 2020, 11:01 PM , By : M.Dobson
Subscription to an Observable never triggers
Subscription to an Observable never triggers
I wish this helpful for you Looks like you have multiple instances of ArticleService.Don't provide ArticleService on every component because this way every component instance will get a new ArticleService instance.
TAG : angular
Date : November 11 2020, 11:01 PM , By : John McLaughlin
Angular2 Routing: Multiple Components at once
Angular2 Routing: Multiple Components at once
fixed the issue. Will look into that further What you want can be achieved with 2 independent router outlets. It makes sense as the components are independent. So you are, probably, already having the main router outlet which is in the topmost compon
TAG : angular
Date : November 10 2020, 11:01 PM , By : Rina Sutar
What's the replacement of Directive in Angular2?
What's the replacement of Directive in Angular2?
it helps some times You should declare directives in declarations meta property of @NgModule as shown below (as directives meta property has been removed from @Component decorator)
TAG : angular
Date : November 10 2020, 11:01 PM , By : friendzj
Using Custom Environment.ts Value for app relative paths in the CLI
Using Custom Environment.ts Value for app relative paths in the CLI
Hope this helps Okay,If i just ready the documentation more closely i would have found my answer see this link to the docs
TAG : angular
Date : November 10 2020, 11:01 PM , By : Luis James
Istanbul instrumenter loader can not find source map for Angular2 component.
Istanbul instrumenter loader can not find source map for Angular2 component.
should help you out I was facing same problem, There is an issue with "istanbul-instrumenter-loader", downgrading to version "^0.2.0" works.Change your package.json and reinstall the package
TAG : angular
Date : November 09 2020, 11:01 PM , By : Jotaro Kujo
Angular 2 File Upload?
Angular 2 File Upload?
Any of those help I am trying to do file upload in Angular 2. Trying , your http service file:
TAG : angular
Date : November 08 2020, 11:01 PM , By : Harley Shugart
Unable to pass data to service from component
Unable to pass data to service from component
With these it helps You are passing data perfectly, but the problem is you declared variable credentials with type { username: '', password: '' };, you didn't assign value to it, which is why it is undefined. : assigns type to variable, = assigns val
TAG : angular
Date : November 08 2020, 11:01 PM , By : W.Vaishnavi
Angular 2 - child routes with router outlet
Angular 2 - child routes with router outlet
hope this fix your issue router-outlet can not be empty. It means when you redirect to main component, you don't have any default child router set. You just need to set it as shown below,
TAG : angular
Date : November 08 2020, 11:01 PM , By : Paul Maxfield
When to use 'npm start' and when to use 'ng serve'?
When to use 'npm start' and when to use 'ng serve'?
help you fix your problem npm start will run whatever you have defined for the start command of the scripts object in your package.json file.So if it looks like this:
TAG : angular
Date : November 07 2020, 11:01 PM , By : Bhanu
Angular2 components not binding the property to DOM
Angular2 components not binding the property to DOM
this will help My guess is that you want to pass randomName, handler1 and firstText as a string values to tweet's properties, but what you are doing at the moment is passing the variables with those names as a values, the problem is they don't exist.
TAG : angular
Date : November 07 2020, 11:01 PM , By : DC N
Module not found: Error: Can't resolve '@angular/core'
Module not found: Error: Can't resolve '@angular/core'
Hope that helps Use the following steps as they explained it in the README file.Clone the repository
TAG : angular
Date : November 07 2020, 11:01 PM , By : Abhishek
ng2-chartjs2 Ionic 2 How to add options
ng2-chartjs2 Ionic 2 How to add options
should help you out I did a small ionic2 project with ng2-chartjs2 charts based on this project. I need to add options and there's no documentation on how to add it. here is my project repo , Try this:1) main.ts
TAG : angular
Date : November 06 2020, 11:01 PM , By : Miguel Angel Fuentes
what is the difference between event binding and property binding?
what is the difference between event binding and property binding?
it helps some times Property binding - In case you have to pass the value from parent component to child component (whether the value is static or dynamic) we have to use the property binding that mean by doing so we send the value using attribute on
TAG : angular
Date : November 06 2020, 11:01 PM , By : SayWoof
Performance Angular 2 is low - test
Performance Angular 2 is low - test
it fixes the issue I'm worried that your issue is related to your code base. You're using AdminLTE, but please keep in mind that if you're looking for performance, you should try to recode your panel's scripts to Angular 2.Currently, you have 180 pag
TAG : angular
Date : November 06 2020, 11:01 PM , By : AS.DEV
Get map value with RXJS and angular
Get map value with RXJS and angular
I wish did fix the issue. I just updated angular and this doesn't work anymore. I get this error: TypeError: Cannot read property 'get' of undefined. The .get function seems to no longer work. Any ideas? , Use .get() on the headers object directly:
TAG : angular
Date : November 06 2020, 11:01 PM , By : Daria Korneichuk
Angular 2 - Cannot read property 'get' of undefined (http undefined)
Angular 2 - Cannot read property 'get' of undefined (http undefined)
this will help You need to provide the user service in your app.module and remove the @Inject and the providers entry in the app.component:app.module.ts
TAG : angular
Date : November 05 2020, 11:01 PM , By : MoMo Limnux
Subjects - apply changes on every next value [BehaviorSubject.onBeforeNext?]
Subjects - apply changes on every next value [BehaviorSubject.onBeforeNext?]
wish help you to fix your issue Since apparently there is no readily available method to do what I needed this is how I implemented my solution using the approach that @estus mentioned in the comments:
TAG : angular
Date : November 05 2020, 11:01 PM , By : Arun
angular extended currency pipe in is not formatting string/int if there is no decimal point in input
angular extended currency pipe in is not formatting string/int if there is no decimal point in input
around this issue If you look at the regexp that you have applied: /^(\d+)?\.((\d+)(-(\d+))?)?$/ it requires a decimal point.The following regex makes the decimal point optional /^(\d+)?\.?((\d+)(-(\d+))?)?$/
TAG : angular
Date : November 04 2020, 11:01 PM , By : Ryan Cassidy
Angular2 - adding [_nghost-xxx-N] and [_ngcontent-xxx-N] messes up my code
Angular2 - adding [_nghost-xxx-N] and [_ngcontent-xxx-N] messes up my code
fixed the issue. Will look into that further You will have to use the /deep/ special selector.https://angular.io/docs/ts/latest/guide/component-styles.html!-deep-
TAG : angular
Date : November 04 2020, 04:05 PM , By : Vitaly Panchuk
angular 2: working with a component's `this` in a Promise
angular 2: working with a component's `this` in a Promise
it helps some times Your problem is caused by not handling this correctly. There are many questions here on exactly this topic.When you write the following
TAG : angular
Date : November 04 2020, 04:05 PM , By : xhizors93

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