title: I want start my search in datalist after entering 3 character?
body: <p>this is my html code i want start searching values after entering 3 charater :-</p>
  
  <pre><code>&lt;input id="restaurants" list="lstRestaurants" type="text" class="form-control form-input input-search input-section clearable" placeholder="Name of Restaurant" [(ngModel)]="searchModel.restaurant" name="restaurant" #restaurant="ngModel"&gt;
  &lt;datalist id="lstRestaurants"&gt;
     &lt;option *ngFor="let restaurant of allRestaurants" value="{{restaurant.name}}"&gt;&lt;/option&gt;
  &lt;/datalist&gt;
  </code></pre>