title: Angular 2 component without selector tag in DOM
body: <p>I want this:</p>
  
  <pre><code>&lt;div *ngIf="..."&gt;div 1...&lt;/div&gt;
  &lt;div *ngIf="..."&gt;div 2...&lt;/div&gt;
  &lt;div *ngIf="..."&gt;div 3...&lt;/div&gt;
  </code></pre>
  
  <p>But I don't wanna repeat the <code>*ngIf</code>, so I created my component <code>&lt;my-component&gt;</code>, with this template:</p>
  
  <pre><code>&lt;div&gt;div 1...&lt;/div&gt;
  &lt;div&gt;div 2...&lt;/div&gt;
  &lt;div&gt;div 3...&lt;/div&gt;
  </code></pre>
  
  <p>And I put *ngIf in my component tag: <code>&lt;my-component *ngIf="..."&gt;</code></p>
  
  <p>The problem is that Angular 2 is putting the <code>&lt;my-component&gt;</code> tag in the DOM, and I don't want it.</p>
  
  <p>For anyone who knows ASP.NET WebForms, I want a component in Angular 2 that works like <code>&lt;asp:PlaceHolder&gt;</code> control...</p>