I need help dynamically adding mat-expansion-panel components to my project. Ideally, I would like to add them when a user triggers a function by clicking a button. The ability to add multiple expansion panels as needed is crucial.
My initial attempt involved manually inserting the HTML tag for mat-expansion, which proved to be an incorrect approach as it simply added the tag without integrating the component as intended.
If you have mat-expansion-panel data that you want to add dynamically, you can store it in an array called matExpansionPanelArray and then use *ngFor to loop through it:
<mat-accordion>
<mat-expansion-panel *ngFor="let item of items;">
<mat-expansion-panel-header>
<mat-panel-title>{{item.title}}</mat-panel-title>
<mat-panel-description>{{item.description}}</mat-panel-description>
</mat-expansion-panel-header>
<mat-form-field>{{item.formField}}</mat-form-field>
</mat-expansion-panel>
</mat-accordion>
This way, whenever you add new data to the "matExpansionPanelArray", a new mat-expansion-panel will be added to your page.
https://i.sstatic.net/zXvPT.png While working with TSX in React and TypeScript, I encountered an issue. A red line appeared on the screen even though the project runs successfully. Can anyone explain why this red line is appearing and why the classes in T ...
Check out this StackBlitz example In my Angular application, I am utilizing a Reactive form with 3 inputs, each having its own validation. Additionally, there is an input that exists outside of the form within its own component, also with its own reactive ...
Within my select element, I populate options based on an array of values. For example: [{ name: 'A', type: 'a', }, { name: 'B', type: 'b', }, { name: 'B', type: 'b', }, { name: &apos ...
Here is a snippet of code I'm working with: interface Notification { message: TemplatedEmail & Email, //current attempt which doesnt do what I want } interface Destination { ccAddresses?: string[], bccAddresses?: string[], toAddresses: st ...
I am currently working on a search form and want to incorporate it within an accordion so that users can simply click to expand the form. Below is the code snippet: TS. buildForm(): void { this.form = this.fb.group({ username: new FormControl(& ...
My program stopped working after updating one of the dependencies and kept throwing the same error. Usually, when I run 'ng serve' in my project everything works fine, but after updating Chartist, I encountered this error: An unhandled exception ...
Hey there, I'm currently attempting to replicate an Angular example online but am encountering issues importing my Tabulator Library in stackblitz. I keep receiving an error when trying to import it in the hello component. import Tabulator from &apo ...
Currently, I am working on creating customized schematics for our Angular Cli project. One of the tasks involves adding properties/variables to both the environment.prod.ts and environment.dev.ts files. I am curious if anyone has experience with this and h ...
Is there a way to test the functionality of the form without considering Mixpanel? I am encountering an error as follows. login.component.ts ngOnInit() { Mixpanel.trackEvent("View Screen", { "Screen Name": "Login" }); this.createForm(); } cr ...
Looking for a way to change the Toggle text in my angular 7 application accordion to images or content displaying a + sign for collapse and - for expand. I need to achieve this using CSS in my SCSS stylesheet so that I can later change the color of the sig ...
I am attempting to create a TypeScript script that will produce the following JavaScript output. This script is intended for a NodeJS server that operates with controllers imported during initialization. (Desired JavaScript output) How can I achieve this? ...
I have an object in the state that I initially set using an action and effect: { field1: 'value1', field2: 'value2', } Later on, I add a new field to this object after receiving a response from the server through effects. As a res ...
I have a collection of peaks in the following format: peaks = 0: {intervalId: 7, time: 1520290800000, value: 54.95125000000001} 1: {intervalId: 7, time: 1520377200000, value: 49.01083333333333} and so on. I am looking to determine the peak with the hig ...
I recently encountered issues with Angular-CLI, so I decided to update it using the command $ npm install -g @angular/cli. However, after doing so, I am facing a new error message. Can anyone provide assistance with this problem? module.js:549 throw err ...
After reading the Invoking Multiple Services section, it seems that despite being able to invoke multiple promises, they appear to be triggered without waiting for the previous one to complete in my own tests. // ... invoke: [ { id: 'service1' ...
Having trouble accessing the array properties from my JSON file using the http get service. The goal is to display the Widget array on the web. service.ts: import { Http, Response, Headers } from '@angular/http'; import { Observable } from &apo ...
As a newcomer to Angular, I sometimes get confused about the ngOnInit() and ngAfterContentInit() lifecycle hooks. According to the official documentation: ngOnInit() : This hook is used to initialize the directive/component after Angular has displayed the ...
I'm currently working with Angular and encountered an error in the console section of my browser after restarting my computer: Unhandled Promise rejection: _ is not defined ; Zone: <root> ; Task: Promise.then ; Value: ReferenceError: _ is not de ...
I'm currently diving into the world of writing unit tests in Angular. One thing I've done is create an httpService with a method called sendToServer, which every component utilizes to send requests to the server: sendToServer(method, url, body, ...
I am facing an issue while trying to deploy a project built with Angular/CLI 6.12.0. After transferring the content of the "dist" folder to a server, I encountered a console error related to MIME type. The module at address "http://www.sylvainallain.fr/p ...