title: Angular 2 - highlight updated table cell
body: <p>How can i flash cell in table that changed its value?</p>
  
  <pre><code>&lt;tr *ngFor="#product of products" (click)="onSelect(product)"&gt;
      &lt;td&gt;{{product.productName}}&lt;/td&gt;
      &lt;td&gt;{{product.price}}&lt;/td&gt;
  &lt;/tr&gt;
  </code></pre>
  
  <p>in component i have input for products : <code>@Input() products:Array&lt;ProductModel&gt;;</code>
  and there is a test timer in parent component that change random product`s price every 3 seconds:</p>
  
  <pre><code>var timer = Observable.timer(2000, 3000);
      timer.subscribe(t =&gt; this._changeRandomProduct());
  
  
  
   private _changeRandomProduct() {
      var productCandidate:ProductModel = this.products[randomOf(0, this.products.length)];
      productCandidate.price = productCandidate.price + 1;
  }
  </code></pre>
  
  <p>how can i handle value change in price-cell to add css class on it ?</p>