Add placeholder to select tag in angular2

Question

I have simple component that contains only form:

import {Component, FORM_DIRECTIVES, NgFor} from \'angular2/angular2\';


@Component({
  selector: \'test-com         


        

Answer 1

This is how we I do it:

<select class="form-control" name="selectedSignierer" #selectedSignierer="ngModel" [(ngModel)]="suisseIdDetail.selectedSigniererBenutzerId" required>
  <option value="null" disabled selected>Select your option</option>
  <option *ngFor="let item of signiererCatalog.entries;" value="{{ item.id }}" >{{ item.value }}</option>
</select>
<div *ngIf="fb.submitted && showSignDefinition === true && !selectedSignierer.valid" class="validation-error">{{ 'ERROR_FIELD_REQUIRED' | translate:lang }}</div>

Answer 2

<select class="form-control" [(ngModel)]="mySelect">
<option value="-1">Placeholder text..</option>
<!-- forloop of options heres -->
</select>

Then in your component. this.mySelect = -1;

Answer 3

I know i'm late , this is how i'm doing ,

initializeSelectOptions(){
 this.optionList = ['..' , '..' , '..'
  ];
 this.optionList.unshift('Select Options')
}

ngOnInit(){
 this.initializeSelectOptions();
}

In my template ,

<select class='select-option' required [(ngModel)]='optionSelected' (ngModelChange)='optionChanged($event)'>
    <option class='option' *ngFor='let option of optionList' [value]="option " [disabled]="option === 'Select Options'">{{option}}</option>
</select>