Select default option value from typescript angular 6

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轻奢々 2020-12-09 07:30

I have a select html like this:


       
   
   . . .

Logic file: `yourelement.component.ts`

In the initialization of FormBuilderobject, in ngOnInit() function, set the default value you desire to be as default selected.

. . .
// Remember to add imports of "FormsModule" and "ReactiveFormsModule" to app.module.ts
import { FormBuilder, FormGroup } from '@angular/forms';
. . .

export class YourElementComponent implements OnInit {
  //  variable
  uploadForm: FormGroup;

  constructor( private formBuilder: FormBuilder ){}

  ngOnInit() {
     this.uploadForm = this.formBuilder.group({
          . . .
          form_variable: ['0'], // <--- Here is the "value" ID of default selected
          . . .
     });
  }
}

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Select default option value from typescript angular 6

Logic file: yourelement.component.ts

Logic file: `yourelement.component.ts`