This is my html,When i click option "new-item"
it will open input type box , and then i enter value it want to add to select option
<form (submit)="addItem()">
<input type="text" [(ngModel)]="add.name" name="name">
<input type="text" [(ngModel)]="add.price" name="price">
<input type="text" [(ngModel)]="add.description" name="description">
<select [(ngModel)]="add.type" name="room-type">
<option [value]="c">Select</option>
<option>BreakFast</option>
<option>Lunch</option>
<option>Dinner</option>
<option><button (click)="addSelect()">Add-item</button></option>
<input *ngIf='edited' type="text" >
</select>
and my type script is,
addSelect() {
this.edited = true;
}
constructor() {
this.edited = false;
}