Setting a default value for a select-option in Angular can be done by initializing the

How can I set a default value of 'John' for a select option in the ngOnInit function when the page loads? I'm not entirely sure if I'm using the select option correctly. Please let me know if there's an error in my approach.

I attempted to set the value using form group and form control but was unsuccessful in setting the default value upon page load.

I have provided a StackBlitz link where I tried to set the default value as 'John' when the page loads, but it appears blank. Any guidance on where I may be mistaken would be greatly appreciated. Thank you!

Link: stackblitz link

angulartypescriptformsformgroups

Answer №1

Before the FormControl is connected to the template's select, the OnInit event takes place, causing the value not to be updated. To ensure that the select receives the updated value from the FormControl, call the set value in the AfterViewInit event after everything has been initialized.

You can see a demonstration of this concept by following this link to a fork of your StackBlitz.

Answer №2

Without the inclusion of value in the options, the functionality will not be successful:

<option *ngFor="let name of names" [value]="name">{{name}}</option>

Similar questions

If you have not found the answer to your question or you are interested in this topic, then look at other similar questions below or use the search

Is there a way to conduct testing on code within an Angular subscribe block without risking values being overwritten in the following subscribe blocks?

In my Angular application, I am using ngx-socket-io and have a component with several .subscribe blocks inside ngOnInit() that are triggered when data is received from the server. The issue arises when testing the component, as calling ngOnInit() in the t ...

angulartestingjestjsngx-socket-io

When employing class decorators, it is essential to use the Angular2 reflect-metadata shim

Exploring server rendering with Angular2 using the universal starter example inspired me to experiment with gulp instead of webpack. However, I encountered an issue when the server started: /Users/jaumard/IdeaProjects/trails-angular2-isomorphic/node_modul ...

angularangular2-universal

Angularfire2 with Firebase - receiving notifications for added child in queried list

Is it possible to utilize the "child_added" event with queried lists? For example: this.curUserPosts = this.af.database.list('/posts', { query: { orderByChild: 'user/id', equalTo: id } }).$ref.on("child_added", (c ...

angularfirebasefirebase-realtime-databaserxjsangularfire2

Pass the API_BASE_URL parameter from the Angular 7 configuration

Currently, I am developing an Angular 7 Application using es6 Javascript and Swagger integration. My current challenge involves adding the configuration to APP_INITIALIZER in the app.module file: export class SettingsProvider { private config: AppConfi ...

angularinitializationconfig

Error message "ERR_NO_ICU" appears when trying to run the command "ng serve

I am currently working on a website project using Spring Boot and Angular, but I am encountering some challenges when trying to start Angular's live development server. The error message I receive is the following: ubuntuserver]#> ng serve internal ...

angularnpmangular-cliangular-schematics

What steps should be followed once multiple RxJS forkjoins have finished executing?

My project involves utilizing two distinct Rxjs forkjoins. The initial forkjoin is always executed, while the second one may be triggered conditionally. We must perform a specific action once both forkjoins have completed, or when only the first one has co ...

angularrxjs

The element 'Component' is not eligible to be utilized as a JSX component (typed layout)

I encountered a type error while working with the following code snippet: {getLayout(<Component {...pageProps} />)} The error message states that 'Component' cannot be used as a JSX component. This is because its element type 'Compo ...

typescriptnext.js

Automatic completion of absolute paths in VS Code with the ability to click and view definitions through the configuration file js/tsconfig.json

In order to ensure that absolute paths function correctly, I have found that there are two key steps involved: the compilation process and configuring the code editor. I successfully managed the compilation aspect by utilizing babel-plugin-module-resolver ...

reactjstypescriptvisual-studio-codenext.jsjsx

Tips for enhancing functionality with dependencies in Angular 2

I am working with a ParentService that has dependencies like: @Injectable() export class ParentService{ constructor(private http:Http, private customService:CustomService){} } Now, I want to create a ChildService that extends the ParentService: @Injec ...

angulartypescriptextendsangular2-services

Is your Angular 2 routing failing to work properly after a page refresh or reload when using gulp?

I've recently started learning Angular 2, and I encountered an issue with routing. During the development phase, I ran my application using npm start. However, after migrating to gulp.js, when I run the application by typing gulp, everything works fin ...

javascriptangularroutesgulp

What could be causing the TypeScript exhaustive switch check to malfunction?

How come the default case in the switch statement below does not result in an exhaustive check where 'item' is correctly identified as of type 'never'? enum Type { First, Second } interface ObjectWithType { type: Type; } c ...

typescript

Angular templates do not support text interpolation within ng-template tags

I'm attempting to insert a URL address inside my ng-template using text interpolation, but it's not functioning as expected. Here is the HTML code snippet: <ng-template #div2> <iframe width="560" height="315" src="{{video ...

angular

Generating a date without including the time

I recently started working with React (Typescript) and I am trying to display a date from the database without including the time. Here is my Interface: interface Games { g_Id: number; g_Title: string; g_Genre: string; g_Plattform: string; g_ReleaseDate: ...

sql-servertypescriptreact-nativedate

Is it possible to enable autocomplete for JavaScript generated code in .proto files?

I recently created a basic .proto file with the following content: syntax = "proto3"; message Event { optional string name = 1; } After downloading and installing the protoc linux compiler (protoc-3.19.3-linux-x86_64.zip) on my local machine, ...

javascriptnode.jstypescriptautocompleteproto

Whenever the route changes in Angular, the components are duplicated

Whenever I switch routes in my Angular application, such as going from home to settings and back to home, all the variables seem to be duplicated from the home page and are never destroyed. I noticed that I created a loop in the home component that displa ...

angulartypescriptionic-frameworkrouter

Flex layout in Angular is not able to adapt to content responsiveness

While the content of home.component.html is unresponsive and only displays some parts of the UI without scaling, when I directly place the code from home.component.html into app.component.html, it becomes responsive and functions perfectly. If anyone knows ...

angularangular-materialangular-flex-layout

When employing `queryParams` in Angular routing, the URL will automatically replace `%` with `%25`

When trying to use queryParams for navigation in Angular routing, I encountered an issue. <a routerLink='/master' [queryParams]="{query:'%US',mode:'text'}"><li (click)="search()">Search</li></a> The d ...

javascriptangulartypescriptroutesangular4-router

Utilizing TypeScript's higher-order components to exclude a React property when implementing them

Trying to create a higher-order component in TypeScript that takes a React component class, wraps it, and returns a type with one of the declared properties omitted. Here's an attempt: interface MyProps { hello: string; world: number; } interfac ...

reactjstypescript

Creating Algorithms for Generic Interfaces in TypeScript to Make them Compatible with Derived Generic Classes

Consider the (simplified) code: interface GenericInterface<T> { value: T } function genericIdentity<T>(instance : GenericInterface<T>) : GenericInterface<T> { return instance; } class GenericImplementingClass<T> implemen ...

typescriptgenericsinheritance

After updating to Angular 15, the web component fails to function properly on outdated versions of Chrome

Ever since upgrading Angular to version 15, my angular web component stopped functioning properly on Chrome 53. The issue seems to be related to the compilerOptions setting the target to ES2022. Upon checking the console, I am seeing the error message: Un ...

angulares2022