I am currently struggling with adding an HTML form to my Angular project

Question

I am currently struggling with adding an HTML form to my Angular project

Currently utilizing Angular framework

My Add button triggers the appending of HTML content upon multiple clicks.
The issue arises when I click the Add button, as the appended content fails to display textboxes or dropdowns. Instead, only the field names appear as plain text.

I would like to share my code snippet below:

TS

export class AppComponent  {
  name = 'Angular';
  htmlToAdd : any ;
  newHtml : any 
  constructor(private elementRef:ElementRef) {}
  add(){
     this.htmlToAdd = `  <form action="/action_page.php">
                  First name:<br>
                  <input type="text" name="firstname" value="Mickey">
                  <br>
                   Last name:<br>
                  <input type="text" name="lastname" value="Mouse">
                  <br><br>
                  <input type="submit" value="Submit">
                  </form> `
      }
}

HTML

<div class="one" [innerHtml]="htmlToAdd"></div> 
<button (click)='add()'> Add </button>
<div [innerHtml]='newHtml'></div>

angular typescript angular-material

Answer 1

Answer №1

It would be much more efficient to use ngFor in this scenario.

Code Snippet for HTML

<form>
    <ng-container *ngFor="let item of items">
        <input type="text" name="firstname" value="John">
         <input type="text" name="lastname" value="Doe">
    </ng-container>
    <input type="submit" value="Submit">
</form>

<button (click)="addItem()"></button>

Consider implementing something similar to the following TypeScript code to better manage your data.

TypeScript Code

items: any[] = [];

addItem() {    
    this.items.push(this.items.length + 1)
}

Answer 2

It would be much more efficient to use ngFor in this scenario.

Code Snippet for HTML

<form>
    <ng-container *ngFor="let item of items">
        <input type="text" name="firstname" value="John">
         <input type="text" name="lastname" value="Doe">
    </ng-container>
    <input type="submit" value="Submit">
</form>

<button (click)="addItem()"></button>

Consider implementing something similar to the following TypeScript code to better manage your data.

TypeScript Code

items: any[] = [];

addItem() {    
    this.items.push(this.items.length + 1)
}

Answer 3

Answer №2

Issue: The variable htmlToAdd is not being appended as expected. It keeps getting re-initialized every time the add() method is called.

To resolve this problem, consider making the following change:

Typescript Solution

import { Component, ElementRef } from "@angular/core";

@Component({
  selector: "my-app",
  templateUrl: "./app.component.html",
  styleUrls: ["./app.component.css"]
})
export class AppComponent {
  name = "Angular";
  htmlToAdd = '';

  constructor(private elementRef: ElementRef) {}

  add() {
    this.htmlToAdd = `${this.htmlToAdd}<form action="/action_page.php">
      First name:<br>
      <input type="text" name="firstname" value="Mickey">
      <br>
      Last name:<br>
      <input type="text" name="lastname" value="Mouse">
      <br><br>
      <input type="submit" value="Submit">
    </form> `;
  }
}

HTML Code

<div class="one" [innerHtml]="htmlToAdd"></div> 
<button (click)='add()'> Add </button>

Check out the Stackblitz example for a live demonstration: https://stackblitz.com/edit/angular-dpm4px

I hope this solution resolves your issue!

Note: It's important to implement dynamic field configuration correctly.

For a better approach, consider using form arrays in reactive forms. Learn more about angular forms and operations here: https://angular.io/guide/reactive-forms#dynamic-controls-using-form-arrays

Answer 4

Issue: The variable htmlToAdd is not being appended as expected. It keeps getting re-initialized every time the add() method is called.

To resolve this problem, consider making the following change:

Typescript Solution

import { Component, ElementRef } from "@angular/core";

@Component({
  selector: "my-app",
  templateUrl: "./app.component.html",
  styleUrls: ["./app.component.css"]
})
export class AppComponent {
  name = "Angular";
  htmlToAdd = '';

  constructor(private elementRef: ElementRef) {}

  add() {
    this.htmlToAdd = `${this.htmlToAdd}<form action="/action_page.php">
      First name:<br>
      <input type="text" name="firstname" value="Mickey">
      <br>
      Last name:<br>
      <input type="text" name="lastname" value="Mouse">
      <br><br>
      <input type="submit" value="Submit">
    </form> `;
  }
}

HTML Code

<div class="one" [innerHtml]="htmlToAdd"></div> 
<button (click)='add()'> Add </button>

Check out the Stackblitz example for a live demonstration: https://stackblitz.com/edit/angular-dpm4px

I hope this solution resolves your issue!

Note: It's important to implement dynamic field configuration correctly.

For a better approach, consider using form arrays in reactive forms. Learn more about angular forms and operations here: https://angular.io/guide/reactive-forms#dynamic-controls-using-form-arrays

I am currently struggling with adding an HTML form to my Angular project

Answer №1

Answer №2

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