How to make dropdown list selected with loop in angular 6?

Question

I have an array as collection and I want to load it within dropdown list & I want a default selection on some condition but I don't know how to achieve this.

app.component.ts

import { Component, OnInit } from '@angular/core';

@Component({
  selector: 'app-commingsoon',
  templateUrl: './commingsoon.component.html',
  styleUrls: ['./commingsoon.component.css']
})
export class CommingsoonComponent implements OnInit {
  public collection = [];
  constructor() {
    for(let i = 1; i<=10 ; i++) {
      this.collection.push(`Angular: ${i}`);
    }
   }

  ngOnInit() {
  }

}

app.component.html

<select name="" id="" style="position:relative; left: 100px">
    <option *ngFor="let i of collection;" value="{{i}}" [selected]="i == Angular: 2">{{ i }}</option>
</select>

I want the drop down should be selected value of when i == Angular: 2

Answer 1

Here is a typical way of using ngModel This is more convenient if you are going to process selected value afterwards.

<select [(ngModel)]="selectedValue">
  <option *ngFor="let option of options" [value]="option.id">
    {{option.name}}
  </option>
</select>

https://stackblitz.com/edit/angular-njs3tz

Answer 2

Quotes are missing, please try i == 'Angular: 2'

Or, if you are just interested in the index:

<option *ngFor="let i of collection; let j = idx" value="{{i}}" [selected]="j === 2">{{ i }}</option>