Tips on changing the color of a dropdown select option in Angular 8

I have been experimenting with changing the color of a dropdown select menu based on the value selected by the user. Here is the code I have been working with:

App.component.ts


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

  selectedColor = '';

  colors = [
    {
      name: 'yellow',
      value: '#ffff00'
    },
    {
      name: 'red',
      value: '#ff3300'
    },
    {
      name: 'blue',
      value: '#0000ff'
    }
  ];

  onChange(value){
    this.selectedColor = value;
  }
}

App.component.html

<select [(ngModel)]="selected" [compareWith]="compareObjects" [ngStyle]="{'background-color': selected.color}">
  <option *ngFor="let color of colors" [ngStyle]="{'background-color': color.value}" [ngValue]="datas">{{color.name}}</option>
 </select>

However, I have noticed that this setup works fine on Windows but not on mac. Any suggestions on how to address this issue?

Answer №1

It seems like what you may be searching for is a code snippet that resembles the following:

Here is a possible solution:

HTML

    <select [(ngModel)]="selected" [compareWith]="compareObjects"
         [ngStyle]="{'background-color': selected.color}">
         <option *ngFor="let color of colors" 
               [ngStyle]="{'background': color.value}" [ngValue]="color"> 
               {{color.name}}
         </option>
    </select>

Please note: the variable name in your code may be different from that in the .ts file, which could be causing the issue with your code not functioning properly.

Answer №2

Here is an example of what your HTML code should look like:

<select [(ngModel)]="selectedColor" [compareWith]="compareObjects"
         [ngStyle]="{'background-color': selected.color}">
         <option *ngFor="let color of colors" 
               [ngStyle]="{'background': color.value}" [ngValue]="color"> 
               {{color.name}}
         </option>
</select>

Answer №3

**Make sure you are iterating over the correct list **

  1. The list name in your typescript file should be "colors"
  2. Do not attempt to iterate over the list named "data" as it does not exist in your typescript file.
  3. To fix this issue, change the list to "colors" in the option tag and update the ngModel name in the HTML page.
  4. Once these changes are made, the iteration should work as intended.

Answer №4

Perhaps consider using [ngClass] to bind the color, whether on the selected option or the dropdown itself. It's worth a try...

 <select [(ngModel)]="selected" [compareWith]="compareObjects"
             [ngClass]="{'background-color': selected.color}">
             <option *ngFor="let color of colors" 
                   [ngClass]="{'background': color.value}" [ngValue]="color"> 
                   {{color.name}}
             </option>
    </select>

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